66 back-up light question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**jocko** · 09-03-2011, 12:00 AM

Good evening truckers, quick electrical question for ya. I put a T5 in my truck and fortunately have the pigtail that came with it. Haven't dug around under the dash yet, but know my 3-speed of course had no electrical hookup like newer trans's do. Since b/u lts were stock on 66 - I checked my wiring diagram - no trace of b/u lights so it may just be a 64-66 or 63-66 wiring diagram and not have them shown.

My question - anyone know how/where on the vehicle the backup lights were actuated in 66? I need to tap into that to make it work with my T5.

Where's the backup light switch located?

Thank you!

64fleetside · 09-03-2011, 12:00 PM

3 speed & auto has them at the base of the steering column, wires were green.

**jocko** · 09-03-2011, 12:38 PM

thanks 64 fleetside!

Scot_Douglas · 09-04-2011, 11:08 AM

I'm on vacation away from my truck

, however, I'm replacing my harness from my 66 and I might have the stock wiring left over I can send you for it. Send me a pm if you want it.

**tazattitude** · 09-04-2011, 11:12 AM

Yep, I went off my neutral safety switch. Green wire to the back.

**jocko** · 09-04-2011, 11:37 AM

Scot and Taz, thanks very much. Taz THANKS for the kind offer, I do still have my stock wiring and I have the weather-pack connector for my trans, just figuring out the best place to marry the two - so I will not need to take you up on that - but thank you very much, very nice of you to offer.

09-03-2011, 12:00 AM	#1
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,975	66 back-up light question Good evening truckers, quick electrical question for ya. I put a T5 in my truck and fortunately have the pigtail that came with it. Haven't dug around under the dash yet, but know my 3-speed of course had no electrical hookup like newer trans's do. Since b/u lts were stock on 66 - I checked my wiring diagram - no trace of b/u lights so it may just be a 64-66 or 63-66 wiring diagram and not have them shown. My question - anyone know how/where on the vehicle the backup lights were actuated in 66? I need to tap into that to make it work with my T5. Where's the backup light switch located? Thank you!

09-03-2011, 12:00 PM	#2
64fleetside Registered User Join Date: Apr 2004 Location: arkieland Posts: 1,070	Re: 66 back-up light question 3 speed & auto has them at the base of the steering column, wires were green.

09-03-2011, 12:38 PM	#3
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,975	Re: 66 back-up light question thanks 64 fleetside!

09-04-2011, 11:08 AM	#4
Scot_Douglas Registered User Join Date: Oct 2009 Location: Howell, MI Posts: 403	Re: 66 back-up light question I'm on vacation away from my truck , however, I'm replacing my harness from my 66 and I might have the stock wiring left over I can send you for it. Send me a pm if you want it. __________________ 1964 C10 - sold to chris1044 1966 C10 Build 'Fread

09-04-2011, 11:12 AM	#5
tazattitude Senior Member Join Date: Oct 2010 Location: Largo, FL Posts: 532	Re: 66 back-up light question Yep, I went off my neutral safety switch. Green wire to the back. __________________ TAZ BUILDS 1966 GMC Suburban 1963 GMC Suburban Patina frame-on FOR Sale 1966 C10 Short Bed (2010-11) Monthly Updates 2015 C10 Pics with my '72 Montego GT 429/521 build 1963 Pro Street C10 back halved. Frame off I did back in 1990 Pics / Video

09-04-2011, 11:37 AM	#6
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,975	Re: 66 back-up light question Scot and Taz, thanks very much. Taz THANKS for the kind offer, I do still have my stock wiring and I have the weather-pack connector for my trans, just figuring out the best place to marry the two - so I will not need to take you up on that - but thank you very much, very nice of you to offer.



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