Reverse light wiring for 68 PG to M20 swap - Team Camaro Tech
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post #1 of 8 (permalink) Old Mar 21st, 13, 10:55 AM Thread Starter
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Reverse light wiring for 68 PG to M20 swap

I've got a Hurst shifter and ordered this switch:
http://www.summitracing.com/parts/huu-2480003


I ordered this harness:
http://www.heartbeatcitycamaro.com/s...ess-1967-1968/



Can anybody tell me where this harness gets ran? I've currently got a console shifted PG so the reverse switch is here:



The 2 terminal connectors on the new harness obviously get screwed into the new switch. The other end with the rounded connector goes where? I don't see a corresponding connector under the dash anywhere. The current pink/green wires that goes to the switch shown above appear to go up behind the gauges somewhere.

Thanks!

Jason
2009 CTS-V - 1968 Camaro 327/M20 Sequoia Green
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post #2 of 8 (permalink) Old Mar 21st, 13, 11:41 AM
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Re: Reverse light wiring for 68 PG to M20 swap

It is going to be up to you how "correct" or "factory" you want things to be.

On 67 and 68 models, that harness you ordered (and may want to cancel/return) runs from the factory reverse lamp switch on the transmission, up the underside of the tunnel, and then plugs into a corresponding plug on the firewall, under the wiper motor. The firewall plug then brings the wires into the main under dash harness, and over above the top of the driver side kick panel.

So, to use that harness you ordered, you need to drill/punch (factory used a Greenlee type punch) the correct size hole in the correct dimple on the firewall (search "reverse plug firewall" or similar; there are a number of good pics of the firewall connector here), and then, if it can be purchased separate from a new manual trans floor shift under dash harness, install the matching connector and wiring from the inside of the car.

Stopping here to make sure I am not answering at same time as another member.

Eric
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post #3 of 8 (permalink) Old Mar 21st, 13, 11:48 AM Thread Starter
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Re: Reverse light wiring for 68 PG to M20 swap

Quote:
Originally Posted by Eric Kammerer View Post
It is going to be up to you how "correct" or "factory" you want things to be.

On 67 and 68 models, that harness you ordered (and may want to cancel/return) runs from the factory reverse lamp switch on the transmission, up the underside of the tunnel, and then plugs into a corresponding plug on the firewall, under the wiper motor. The firewall plug then brings the wires into the main under dash harness, and over above the top of the driver side kick panel.

So, to use that harness you ordered, you need to drill/punch (factory used a Greenlee type punch) the correct size hole in the correct dimple on the firewall (search "reverse plug firewall" or similar; there are a number of good pics of the firewall connector here), and then, if it can be purchased separate from a new manual trans floor shift under dash harness, install the matching connector and wiring from the inside of the car.

Stopping here to make sure I am not answering at same time as another member.
The harnes I ordered is specifically for the Hurst reverse switch.

So....if I plug the harness into the Hurst reverse switch and drill the hole in the firewall, there should be "from the factory" a male plug that corresponds with what I have that's connected to the green/pink wires currently going to my reverse switch connected to my PG shifter?

Since I don't have that, and I imagine most don't who do the swap, what do people usually do? Can this be bought as a pigtail?

Jason
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post #4 of 8 (permalink) Old Mar 21st, 13, 11:50 AM
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Re: Reverse light wiring for 68 PG to M20 swap

Do you have the 68 Camaro AIM? It shows these harnesses/connections in several different sections. If you don't have the AIM, PM me.

Anyway, if you want it to look OE, it is a fair amount of work. If you just want it functional? You buy some correct gage wire, if needed, and extend the pink and lime green wires that connected to the auto trans NSS you showed at the bottom to the switch you showed at the top. If you have a floor shifter/selector for the Glide, you won't need to extend very far. You run the two wires, inside some well wrapped plastic loom tubing, under the new shifter boot to the new aftermarket switch. And... You're finished.

If your Glide is column shift, you'll just need a little more wire to get from the auto NSS connectors, under the carpet at the front of the tunnel, to the new shifter hole.

Eric
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post #5 of 8 (permalink) Old Mar 21st, 13, 11:52 AM
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Re: Reverse light wiring for 68 PG to M20 swap

Quote:
Originally Posted by blue89bird View Post
The harnes I ordered is specifically for the Hurst reverse switch
Yes, but it uses the factory style round connector to mate with the firewall connector. Once you do the search I suggested and see the picture of the factory firewall connector, I think you'll understand.

Eric
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post #6 of 8 (permalink) Old Mar 21st, 13, 11:56 AM Thread Starter
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Re: Reverse light wiring for 68 PG to M20 swap

Quote:
Originally Posted by Eric Kammerer View Post
Yes, but it uses the factory style round connector to mate with the firewall connector. Once you do the search I suggested and see the picture of the factory firewall connector, I think you'll understand.
Got it.



I obviously don't have the other end of this harness since I'm originally an automatic and I'm not changing the dash harness out at this point in time.

The easiest thing I guess would be to cut the connector off, use some spade connections and call it a day. Do you know if they offer the other end of the harness somewhere?

Jason
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post #7 of 8 (permalink) Old Mar 21st, 13, 11:58 AM Thread Starter
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Re: Reverse light wiring for 68 PG to M20 swap

Looks like AAW makes it:



I'm guessing from the picture if I feel around enough I can figure out where it ties into the dash harness somewhere right?

Jason
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post #8 of 8 (permalink) Old Mar 21st, 13, 12:20 PM Thread Starter
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Re: Reverse light wiring for 68 PG to M20 swap

I was just thinking the easiest thing to do is probably just cut the round connector off this harness and feed it through the hole for the auto shifter cable. Should then be able to just connect it to the existing harness pretty easy.

Jason
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