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Tach/gauges conversion


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I need to have the under dash and under hood wiring harnesses refurbished. I would also like to add after market center gauges and have the idiot light non tach cluster converted to a tach cluster. My car has the idiot light non tach cluster with no center gauges. Any recommendations? Thanks, Ryan

1973 Mach 1, Porsche Guards Red, 429/C6

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

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Member Midlife is the only one i will trust with my harness.

 

Sent from my SAMSUNG-SM-G930A using Tapatalk

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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

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This has been covered before with some great looking installations. You can find them by doing a search of the forum. This thread covers both gauges and conversion:

https://www.7173mustangs.com/thread-seeking-help-advice-on-centre-guage-setup

 

 

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

--Albert Einstein

 

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Yup, can do all you want, but will need more details on the signal requirements on the center 3 gauge clusters that you end up using. One thing, though, if you want to keep the stock ammeter, that will require the headlight harness to be converted from standard to tach-configuration. Otherwise, you can keep your standard headlight harness. You might also want to consider hard-wiring your dash cluster: see https://www.7173mustangs.com/thread-can-the-instrument-cluster-be-hard-wired

Let me check your shorts!

http://midlifeharness.com

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For a tach conversion, you can't beat Rocketman at www.RCCinnovations.com He also does a conversion for the factory amp meter to volts, but still looks stock.

There are diagrams out there to wire in an aftermarket volt meter. As for oil and temp gauges, you can go mechanical, but you will need to drill a 1" or bigger hole in your firewall to get the  pick-up sensors through. The oil sensor is easier to install, but stay away from the plastic tube supplied and go copper. The water will be more difficult as there is not much room at the front of the engine to get the connectors needed in. I'm in this position, but not yet made up my mind if I want to drill that hole in my mint firewall. Electronic gauges if you can find them would be easier. Midlife can better help on that I'm sure.

Geoff.

 I learn something new every day!

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Yup, can do all you want, but will need more details on the signal requirements on the center 3 gauge clusters that you end up using.  One thing, though, if you want to keep the stock ammeter, that will require the headlight harness to be converted from standard to tach-configuration.  Otherwise, you can keep your standard headlight harness.  You might also want to consider hard-wiring your dash cluster: see https://www.7173mustangs.com/thread-can-the-instrument-cluster-be-hard-wired

 

Your tach cluster conversion, is that the actual tach face in the cluster or is that just the wiring part of it? I'm wanting the tach face to look like the stock one. I didn't know if I need to have rccinnovations do the idiot light cluster to tach clustér conversion and then have you do the wiring harness or if you do the whole thing? Sorry for the delayed reply. Ryan

1973 Mach 1, Porsche Guards Red, 429/C6

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

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Yup, can do all you want, but will need more details on the signal requirements on the center 3 gauge clusters that you end up using.  One thing, though, if you want to keep the stock ammeter, that will require the headlight harness to be converted from standard to tach-configuration.  Otherwise, you can keep your standard headlight harness.  You might also want to consider hard-wiring your dash cluster: see https://www.7173mustangs.com/thread-can-the-instrument-cluster-be-hard-wired

 

Your tach cluster conversion, is that the actual tach face in the cluster or is that just the wiring part of it? I'm wanting the tach face to look like the stock one. I didn't know if I need to have rccinnovations do the idiot light cluster to tach clustér conversion and then have you do the wiring harness or if you do the whole thing? Sorry for the delayed reply. Ryan

Just the wiring part of it.  I assume you have a true tach dash cluster.  If you go to RCCI, I can also deal with his conversion, as the wiring would be the same as the standard dash cluster.  I'll add wires for the tach so that those connections become part of the quick disconnect plugs between underdash and dash cluster.

Let me check your shorts!

http://midlifeharness.com

cactus.jpg.92e5d9d8700abc0ed60c8ccb3426248e.jpg

 

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Yup, can do all you want, but will need more details on the signal requirements on the center 3 gauge clusters that you end up using.  One thing, though, if you want to keep the stock ammeter, that will require the headlight harness to be converted from standard to tach-configuration.  Otherwise, you can keep your standard headlight harness.  You might also want to consider hard-wiring your dash cluster: see https://www.7173mustangs.com/thread-can-the-instrument-cluster-be-hard-wired

 

Your tach cluster conversion, is that the actual tach face in the cluster or is that just the wiring part of it? I'm wanting the tach face to look like the stock one. I didn't know if I need to have rccinnovations do the idiot light cluster to tach clustér conversion and then have you do the wiring harness or if you do the whole thing? Sorry for the delayed reply. Ryan

Just the wiring part of it.  I assume you have a true tach dash cluster.  If you go to RCCI, I can also deal with his conversion, as the wiring would be the same as the standard dash cluster.  I'll add wires for the tach so that those connections become part of the quick disconnect plugs between underdash and dash cluster.

 

I actually have the standard idiot light cluster, I'm wanting to do the RCCI tach conversion and also add the 3 gauge center cluster. The 3 gauges would be aftermarket because I don't have the factory gauges. I'm trying to figure out what I need to do first, the RCCI and then have you do my wiring harnesses?

1973 Mach 1, Porsche Guards Red, 429/C6

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

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if you wanted OE 3 pack center gauges I've seen at least 2 different sets available lately, NOT cheap by any means but factory correct and at that point you would just need to convert or replace the harness which I'm sure midlife could advise you on.

( I have this image in my head that midlife is a human sized mouse that has made a nest of scavenged copper wires and harnesses that he just works with to help us all out, I dunno why but that's what believe he really is, think the seer mouse in secret of nimh.

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if you wanted OE 3 pack center gauges I've seen at least 2 different sets available lately, NOT cheap by any means but factory correct and at that point you would just need to convert or replace the harness which I'm sure midlife could advise you on.

( I have this image in my head that midlife is a human sized mouse that has made a nest of scavenged copper wires and harnesses that he just works with to help us all out, I dunno why but that's what believe he really is, think the seer mouse in secret of nimh.

 

 

 

lollerz  Naw, I'm really the size of a Maine moose but without antlers.  You can call me Bullwinkle, but don't call me late for dinner.

Let me check your shorts!

http://midlifeharness.com

cactus.jpg.92e5d9d8700abc0ed60c8ccb3426248e.jpg

 

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Do the RCCI conversion (I know how to handle that), and get your 3 gauge center cluster gauges.  I'll need to know how they require wiring before I do work on your underdash harness.

Thanks for all the information. I'm in the process of finding some aftermarket electric gauges. When I get all that squared away I'll be getting in contact with you to. Thanks all for the info. Ryan

1973 Mach 1, Porsche Guards Red, 429/C6

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

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I have a RCCI tach conversion that I purchased and won’t be using if you’re interested

 

What is the reason for not using it?

1973 Mach 1, Porsche Guards Red, 429/C6

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

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Do the RCCI conversion (I know how to handle that), and get your 3 gauge center cluster gauges.  I'll need to know how they require wiring before I do work on your underdash harness.

 

Ok, if I have the RCCI tach conversion done with the idiot lights functional also, then you will be able to add the 3 center gauge wiring? Or would it be better to just do the tach conversion without the idiot lights function? I'm really sorry if I'm making this more difficult than it really is? Ryan

1973 Mach 1, Porsche Guards Red, 429/C6

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

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You can't have idiot lights and 3 gauge cluster at the same time without having "tees" at the sending unit location. Sending units for idiot lamps and gauges are different. You can have one or the other, but not both.

Let me check your shorts!

http://midlifeharness.com

cactus.jpg.92e5d9d8700abc0ed60c8ccb3426248e.jpg

 

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You can't have idiot lights and 3 gauge cluster at the same time without having "tees" at the sending unit location.  Sending units for idiot lamps and gauges are different.  You can have one or the other, but not both.

 

Is that because the sending units are idiot? 

 

lollerz

 

PS: TGIF

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

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You can't have idiot lights and 3 gauge cluster at the same time without having "tees" at the sending unit location.  Sending units for idiot lamps and gauges are different.  You can have one or the other, but not both.

 

Is that because the sending units are for idiots? 

 

lollerz

 

PS: TGIF

 

Fixed it for you.

Let me check your shorts!

http://midlifeharness.com

cactus.jpg.92e5d9d8700abc0ed60c8ccb3426248e.jpg

 

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You can't have idiot lights and 3 gauge cluster at the same time without having "tees" at the sending unit location.  Sending units for idiot lamps and gauges are different.  You can have one or the other, but not both.

 

Ok thanks, makes sense.

1973 Mach 1, Porsche Guards Red, 429/C6

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

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You can't have idiot lights and 3 gauge cluster at the same time without having "tees" at the sending unit location.  Sending units for idiot lamps and gauges are different.  You can have one or the other, but not both.

 

Is that because the sending units are idiot? 

 

lollerz

 

PS: TGIF

That's funny!

1973 Mach 1, Porsche Guards Red, 429/C6

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

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