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ok, Im just getting to the point where I am able to drive my car, now on its first run down the street, I have one issue, the lights are on for about 10-15 minutes then just go out. I then can shut them off and turn them back on and they then stay on for about 3-4 minutes then go out. and they just repeat this 3-4 minute intervals. do you think its the light switch heating up? or something else?

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My guess is bad headlight switch. Mine was doing similar. I replaced and also wired my headlights through a relay to take the load off the switch. No problems since.

73 Grande H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

 

- Jason

 

 

082-hot-rod-power-tour-2017-1970-1970s.jpg

 

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I think its the switch.  Are you running halogen lights?

 

kcmash

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The light switch has a built-in circuit breaker, and that is what is overheating and breaking the connection. The circuit breaker may be weak, you may have a short, or aftermarket headlights, like halogen, may be overloading the circuit. Jason has the best solution. If you do install a relay I would recommend protecting the new circuit with a self resetting circuit breaker, also.

 

 

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

--Albert Einstein

 

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yes I am running halogens, I have orderd a NOS light switch. so now my question is how to wire it to a resistor or relay? if I wire through resistor then what size? and where do I wire that at? I have no electrical experience as you can tell.

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yes I am running halogens, I have orderd a NOS light switch. so now my question is how to wire it to a resistor or relay? if I wire through resistor then what size? and where do I wire that at? I have no electrical experience as you can tell.

You will wire through a relay, not a resistor. Use the existing headlight wire feed as the trigger for relay and run a separate power that you can pull from the battery but be sure to protect that with a fuse or circuit breaker. That wiring can all be under hood

[button=http://www.7173mustangs.com/ezgallery.php?action=myimages&u=3961]My Mach[/button] [button=http://www.7173mustangs.com/forum-garage?filterxt_uid=3961]Check out My Garage[/button]

 

 

 

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yes I am running halogens, I have orderd a NOS light switch. so now my question is how to wire it to a resistor or relay? if I wire through resistor then what size? and where do I wire that at? I have no electrical experience as you can tell.

You will wire through a relay, not a resistor. Use the existing headlight wire feed as the trigger for relay and run a separate power that you can pull from the battery but be sure to protect that with a fuse or circuit breaker. That wiring can all be under hood

This will work https://www.cjponyparts.com/redline-lumtronix-headlight-power-upgrade-harness-for-two-headlights-1965-1973/p/HVU1/. https://www.rccinnovations.com/index.php?show=menu-hrk-all

1973 Mach 1, Porsche Guards Red, 429/C6

1972 Mach 1, Grabber Blue, 302/C4, currently under construction

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Wish I had known there was a kit out there. I made my own.

73 Grande H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

 

- Jason

 

 

082-hot-rod-power-tour-2017-1970-1970s.jpg

 

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yes I am running halogens, I have orderd a NOS light switch. so now my question is how to wire it to a resistor or relay? if I wire through resistor then what size? and where do I wire that at? I have no electrical experience as you can tell.

You will wire through a relay, not a resistor. Use the existing headlight wire feed as the trigger for relay and run a separate power that you can pull from the battery but be sure to protect that with a fuse or circuit breaker. That wiring can all be under hood

This will work https://www.cjponyparts.com/redline-lumtronix-headlight-power-upgrade-harness-for-two-headlights-1965-1973/p/HVU1/. https://www.rccinnovations.com/index.php?show=menu-hrk-all

 

I bought and installed the CJ Pony harness, for $50 it's hard  to beat. Just faster/easier to spend the money and go plug and play for improved lighting.  Seems safer from a wiring perspective too, especially if you are using your original harness.

 

I need to do this to my vette too, but the harness it 4X as expensive. I will be building that one myself.

Black 1971 Mach 1

351C/FMX/TrickFlow Heads/Lunati Retro Roller Conversion

Classic Auto AC, Manual Front Discs, Upgraded Springs/Shocks/Close-Ratio Steering

 

IMG-2977.jpg

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Here's a $10 solution on eBay, It's the same harness most places are carrying, sourced out of China. I used this on my 71 and only had to extend the battery power lead to make it work.

 

https://www.ebay.com/itm/1x-CERAMIC-H4-HEADLIGHT-RELAY-WIRING-HARNESS-2-HEADLAMP-LIGHT-BULB-SOCKET-PLUGS/290975680907

 

 

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THANKS EVERYONE FOR THE REPLIES, I HAVE ORDERED THE KIT AND WILL GIVE THIS A SHOT.

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