Jump to content

Recommended Posts

1 hour ago, jpaz said:

Ok, here’s a few pics. I just hid the relay harness that goes over to the drivers side light up in the bumper. My relays are not hidden though. I did have them behind the rad support, but after I had the front end repairs done they put them on the front side of the support. I have been wanting to move them back but haven’t got to it yet. Other than that the connections at the headlights are behind the lights, so not to noticeable. I could probably tape up some of the new wiring so it’s not as noticeable too, but good enough for now.

C22A7822-93C3-407D-A2CD-920234DD189B.jpeg

0539EA0B-924F-4867-9789-ABB388CBDFAF.jpeg

 

 

 

Thanks John. 

So, I think you have Rocketman's relay kit. I looked at kits on his website and I would think it's the universal kit we would need to buy, seeing that you have the orange lamp plugs. If this is not Bob's kit, which did you buy? Others have said Bob's kits are really good quality, but none have said which kit. I'm still on the fence about buying relays for use with LED's.

  • Like 1

Geoff.

 I learn something new every day!

Link to post
Share on other sites
  • Replies 89
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

I used this relay pack from Amazon on mine, saves a bunch of time on wiring and the quality is very good.    https://www.amazon.com/gp/product/B085N87SR3/ref=ppx_yo_dt_b_search_asin_title?ie

I'll second that, droptop73. I think this is a change I definitely want to make even though I don't do a lot of night driving in the Mach. Then I can say ALL my lights are now LED type!! (with the exc

The primary reason for this thread was to discus reducing the amperage across the headlight switch and increase the power to and the brightness of the headlights. Another benefit of reducing the

Posted Images

Geoff, This is the one. 

plug-play.gif

Click to enlarge

 

Warranty Info
HRKU - Headlight Relay Kit, Universal



  The Universal Relay Kit has everything you need to add relays to your headlight circuit - without cutting your original wiring. The -2 model is for cars that have 2 headlights, the -4 version is for cars with 4 sealed beams (seperate high beams).
Included in kit: 2 weatherproof controllers, a 35A auto-reset circuit breaker, power wire, crimp-on connectors and easy to follow instructions.

Benefits:

  • Easy to install, and no cutting. Plug a controller into the back of each low beam, run a power feed and you're done.
  • Redundancy. Each headlight - High, Low, Left, Right has it's own relay and each side has it's own controller.
  • Each 40/60 Amp 12 Volt sealed relay has Negative Spike Protection built in. This means no spikes or feedback to upset delicate electronics.
  • Each controller contains an internal auto resetting circuit breaker to isolate left and right sides.
  • If a controller goes bad, remove it. The OEM circuit will power those bulbs.
  • The single feed wire is easily hidden and the controllers can be removed for car shows if desired.
  • Compact size - each controller is only 3x2x1.5.
  • Kit comes with 35A circuit breaker to power up to 4 halogen lamps at 7.5A each and is auto resetting.
    Notes:
    1 It is the responsibility of the purchaser to ensure that the vehicle's wiring is in suitable condition to supply power to the installed lamps.

     

Available?  Yes. Estimated ship date: Saturday, June 26th

 

HRKU-2
For models with 2 headlights

$99.00

 

  • Thanks 1

Chris - BIG RED MACH 1 / Born in '73 - Drive a '73 / Former U.S. Army 63B10-H8 / 1st Infantry Division - The Big Red One

 

Link to post
Share on other sites
3 hours ago, Big Red Mach 1 said:

Geoff, This is the one. 

plug-play.gif

Click to enlarge

 

Warranty Info
HRKU - Headlight Relay Kit, Universal



  The Universal Relay Kit has everything you need to add relays to your headlight circuit - without cutting your original wiring. The -2 model is for cars that have 2 headlights, the -4 version is for cars with 4 sealed beams (seperate high beams).
Included in kit: 2 weatherproof controllers, a 35A auto-reset circuit breaker, power wire, crimp-on connectors and easy to follow instructions.

Benefits:

  • Easy to install, and no cutting. Plug a controller into the back of each low beam, run a power feed and you're done.
  • Redundancy. Each headlight - High, Low, Left, Right has it's own relay and each side has it's own controller.
  • Each 40/60 Amp 12 Volt sealed relay has Negative Spike Protection built in. This means no spikes or feedback to upset delicate electronics.
  • Each controller contains an internal auto resetting circuit breaker to isolate left and right sides.
  • If a controller goes bad, remove it. The OEM circuit will power those bulbs.
  • The single feed wire is easily hidden and the controllers can be removed for car shows if desired.
  • Compact size - each controller is only 3x2x1.5.
  • Kit comes with 35A circuit breaker to power up to 4 halogen lamps at 7.5A each and is auto resetting.
    Notes:
    1 It is the responsibility of the purchaser to ensure that the vehicle's wiring is in suitable condition to supply power to the installed lamps.

     

Available?  Yes. Estimated ship date: Saturday, June 26th

 

HRKU-2
For models with 2 headlights

$99.00

 

Thanks Chris, That's the one I figured it would be. All the others seem to have different type connectors. This is great info for everyone.

I'm on the fence about buying one at this time now due to cost. It may be in next years budget. 

This has proved to be a pretty long, drawn out thread, but I feel I/we have all learned a lot and that's what it's all about. Thanks to everyone who has added important info to Droptop 73's post and question.

  • Like 1

Geoff.

 I learn something new every day!

Link to post
Share on other sites
3 hours ago, Stanglover said:

Thanks John. 

So, I think you have Rocketman's relay kit. I looked at kits on his website and I would think it's the universal kit we would need to buy, seeing that you have the orange lamp plugs. If this is not Bob's kit, which did you buy? Others have said Bob's kits are really good quality, but none have said which kit. I'm still on the fence about buying relays for use with LED's.

The original relay harness I bought got ruined in my accident. I don’t remember where I got them, but it was before I knew that Rocketman sold them. But the one I have now was replaced by the shop that repaired my car and I have no idea where they got them from. From the pics you posted compared to mine the light looks pretty much the same to me.

  • Like 1

John - 72 Q Code

Link to post
Share on other sites
1 hour ago, Stanglover said:

This has proved to be a pretty long, drawn out thread, but I feel I/we have all learned a lot and that's what it's all about. Thanks to everyone who has added important info to Droptop 73's post and question.

For sure. Apologies to Droptop73 for the hijack, but we now have 3 thumbs up (Chris, Geoff, John) for what I would consider the "Classic Look LED Headlights" with the Hella globes and the fanless LED's listed above (or any similar). Relays don't appear to be needed, but certainly could not hurt. I'd consider those optional. Hopefully that helps Droptop73 and other make some decisions in the future. 

  • Like 1

Chris - BIG RED MACH 1 / Born in '73 - Drive a '73 / Former U.S. Army 63B10-H8 / 1st Infantry Division - The Big Red One

 

Link to post
Share on other sites
On 5/1/2021 at 5:04 PM, Big Red Mach 1 said:

For sure. Apologies to Droptop73 for the hijack, but we now have 3 thumbs up (Chris, Geoff, John) for what I would consider the "Classic Look LED Headlights" with the Hella globes and the fanless LED's listed above (or any similar). Relays don't appear to be needed, but certainly could not hurt. I'd consider those optional. Hopefully that helps Droptop73 and other make some decisions in the future. 

No need for any apologies here! 

This has changed the direction of my build. I went with the relay kit, Hella globes and LED lights. I am very impressed with the results shown in this thread. I don't have power to my lights yet as I'm in the midst of rewiring the car as well. I like the classic look of the Hella globes and LED headlights were in the plan eventually. 

I also decided to use the 71-72 under bumper turn signals and convert the lights in my 73 grille to running lights just to be different LOL... 

  • Like 1

[align=left]Jeff T.

 

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passengers. [/align]

Link to post
Share on other sites
On 5/1/2021 at 3:04 PM, jpaz said:

The original relay harness I bought got ruined in my accident. I don’t remember where I got them, but it was before I knew that Rocketman sold them. But the one I have now was replaced by the shop that repaired my car and I have no idea where they got them from. From the pics you posted compared to mine the light looks pretty much the same to me.

I think you might've gotten the same one I did, but I can't remember if I grabbed it from NPD or CJPP.  https://www.npdlink.com/product/headlight-power-upgrade-harness-for-two-headlight-vehicles/208636/200546

Right now, I have a set of Scott Drake halogens (https://www.cjponyparts.com/scott-drake-headlight-halogen-fomoco-mustang-1965-1968-1970-1973/p/HL4/), and while they're a LOT brighter than the standard OEM replacements, they're basically just vintage lights that aren't very bright at all (compared to what's available these days, that is).  I also picked up a set of these so I can run H4s (G.E. SilverStars, to be specific), which should pretty much take of any lighting issues.

I also know I need to pick up another relay harness for my '80 CJ-7, so I can run some G.E. SilverStars in it when I get it back on the road.

Eric

mach1sig2.gif

Link to post
Share on other sites
15 minutes ago, droptop73 said:

I also decided to use the 71-72 under bumper turn signals and convert the lights in my 73 grille to running lights just to be different LOL... 

I'd be super interested in doing something similar. Will the 71-72 turns bolt right up to the 73? Or are you fabbing some brackets? 

Chris - BIG RED MACH 1 / Born in '73 - Drive a '73 / Former U.S. Army 63B10-H8 / 1st Infantry Division - The Big Red One

 

Link to post
Share on other sites

I ordered my relay kit from Summit back in 2014.

https://www.summitracing.com/parts/UPD-34263

20160929_171923_edit2_small.jpg

 

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump

Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes

Link to post
Share on other sites
1 hour ago, Mister 4x4 said:

I think you might've gotten the same one I did, but I can't remember if I grabbed it from NPD or CJPP.  https://www.npdlink.com/product/headlight-power-upgrade-harness-for-two-headlight-vehicles/208636/200546

Right now, I have a set of Scott Drake halogens (https://www.cjponyparts.com/scott-drake-headlight-halogen-fomoco-mustang-1965-1968-1970-1973/p/HL4/), and while they're a LOT brighter than the standard OEM replacements, they're basically just vintage lights that aren't very bright at all (compared to what's available these days, that is).  I also picked up a set of these so I can run H4s (G.E. SilverStars, to be specific), which should pretty much take of any lighting issues.

I also know I need to pick up another relay harness for my '80 CJ-7, so I can run some G.E. SilverStars in it when I get it back on the road.

I think the shop that did work on my car got the harness from NPD. That’s where they get a lot of their parts from. Looks just like the one in my car now.

 I had the Scott Drake halogens too. They were much better than the original lights and probably the best thing Scott Drake made in my opinion. But these new leds are much brighter.

  • Like 1

John - 72 Q Code

Link to post
Share on other sites

The primary reason for this thread was to discus reducing the amperage across the headlight switch and increase the power to and the brightness of the headlights.

Another benefit of reducing the amperage consumed by the headlights is increasing available power (and voltage) to most of the rest of the car. All of the electrical systems in these cars is fed by that fat yellow wire that runs from the solenoid or terminal through the firewall and under the dash, except for power windows, convertible top, and heated rear window. All wire, including copper wire, has a small resistance to the flow of electricity which creates a voltage drop in the wire which is dissipated as heat. The higher the amperage draw through the wire the greater the voltage drop. 

Eliminating the current draw to the headlights, even LEDs, frees up voltage to the rest of the electrical systems, such as turn signals, brake lights, taillights, parking lights, heater blower, radio, dome lights, and the ignition system.

  • Like 2

 

 

“If you can't explain it simply, you don't understand it well enough.”

--Albert Einstein

 

Link to post
Share on other sites
17 minutes ago, Don C said:

The primary reason for this thread was to discus reducing the amperage across the headlight switch and increase the power to and the brightness of the headlights.

Another benefit of reducing the amperage consumed by the headlights is increasing available power (and voltage) to most of the rest of the car. All of the electrical systems in these cars is fed by that fat yellow wire that runs from the solenoid or terminal through the firewall and under the dash, except for power windows, convertible top, and heated rear window. All wire, including copper wire, has a small resistance to the flow of electricity which creates a voltage drop in the wire which is dissipated as heat. The higher the amperage draw through the wire the greater the voltage drop. 

Eliminating the current draw to the headlights, even LEDs, frees up voltage to the rest of the electrical systems, such as turn signals, brake lights, taillights, parking lights, heater blower, radio, dome lights, and the ignition system.

As I asked originally " We need relays why?" thanks to your detailed and informative replies, I now know why they are needed. We've been all over the map on this thread and from reading others replies, a lot has been learned, for me especially. As you've read, I made a bad choice and bought a cheapo Chinese relay that did not work. I ought to have at least bought a better quality relay, which is still on the to do list. Adding that can't hurt anything other than the piggy bank.

Thanks Don for your insight, it is much appreciated.

  • Like 1

Geoff.

 I learn something new every day!

Link to post
Share on other sites
20 hours ago, Big Red Mach 1 said:

I'd be super interested in doing something similar. Will the 71-72 turns bolt right up to the 73? Or are you fabbing some brackets? 

I swapped the 73 front bumper for the 71-72 chrome bumper and used the 71-72 fenders and valance. The earlier valance has mounting for the turn signals. I'm sure the early turn signal housings could be adapted to the 73 with some effort. 

[align=left]Jeff T.

 

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passengers. [/align]

Link to post
Share on other sites
Posted (edited)
4 hours ago, droptop73 said:

 I'm sure the early turn signal housings could be adapted to the 73 with some effort. 

It certainly seems like there are some "landing pads" for lack of a better term that I could use for mounting/alignment. The 73 urethane bumper hangs pretty low though. I'd like to make those the markers, and keep my turn signals up where they are, just split them. With these new LED's, even with the electronic flashers, when the markers are on, the turn signals don't really "flash" it's more of just a pulse and I don't care for it. Perfect when the markers are off, and perfect in the back regardless. Just those that bother me.  

20210504_081016.jpg

20210504_081040.jpg

Edited by Big Red Mach 1

Chris - BIG RED MACH 1 / Born in '73 - Drive a '73 / Former U.S. Army 63B10-H8 / 1st Infantry Division - The Big Red One

 

Link to post
Share on other sites

Looks like my best bet is to find a set of these brackets from an otherwise roached 71-72 valance. 

 

s-l1600.jpg

s-l1600 (1).jpg

s-l1600 (2).jpg

  • Like 1

Chris - BIG RED MACH 1 / Born in '73 - Drive a '73 / Former U.S. Army 63B10-H8 / 1st Infantry Division - The Big Red One

 

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...