What are these wires for? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GMCjunkie · 07-02-2011, 04:00 PM

Have been doing some engine purtification,

and came across these two wires (black one on the left, green one on the right, both rolled up) that were just cut off and hanging. I have no idea what they used to go to, nor how long they have been cut. They look like original wires. Any ideas?

Thanks!
junk

GMCjunkie · 07-02-2011, 04:02 PM

Just doing some superficial stuff, and last pic, my helper, he bout "helps" me to death sometimes. lol

dmack91 · 07-02-2011, 05:01 PM

The horn wire is a heavy, green one. Do you have a working horn?

pat 70/71 · 07-02-2011, 05:15 PM

Not 100% sure on the wires but I am 100% sure your little helper will grow up faster than you will ever expect!! have fun every chance you get& keep him close to your heart&your side. cheers, Pat

GMCjunkie · 07-02-2011, 07:35 PM

dmack91, yes the horn works,

Pat70/71. Yep, I know this darlin. one of my other helpers (Justin, age 21) will graduate from boot camp in just under 2 weeks. He was my "truck buddy" up until he left for Lackland AFB. There is 20 years between my oldest and youngest children, Rick is my oldest at 25 and a daughter, Candace in the middle at 23, PLUS 3 grand babies.

JimKshortstep4x4 · 07-02-2011, 07:42 PM

I see that you still have the remains of the Transmission Controlled Spark, (TCS) and my guess is the wires are part of the sensing for the system. One from the transmission to let the vacuum advance work when the transmission is in high gear. The other one is to let the system know when the engine is warm enough to allow the vacuum advance to work. Looking at the engine, I doubt if any part of the TCS is hooked up to it anymore.

Jim

GMCjunkie · 07-02-2011, 07:47 PM

Jim, thanks. If that is indeed what the wires are, will that effect the performance of my truck?

thanks
junk

71longbed-brew · 07-02-2011, 07:58 PM

not to knit pick but you might think about getting rid of that flex fan and a fan shroud never hurts .... best of luck

JimKshortstep4x4 · 07-02-2011, 08:01 PM

The truck will run better without the system being hooked up.

Jim

GMCjunkie · 07-02-2011, 08:27 PM

71 longbed. I just bought the flex fan, had electric...no thanks.

, but I agree with you on the shroud. Its commin

Jim. Thanks again. so I can just remove the plugs that they are attached to? Is there anything else with that system I can get rid of? I hate having non functional, non useful junk on my truck that could be removed and clean up the engine compartment.

beautimus · 07-03-2011, 12:12 PM

Detonator........

just kidding!

07-02-2011, 04:00 PM	#1
GMCjunkie Dude...I'm a CHICK Join Date: Jul 2000 Location: Lakeland Georgia Posts: 6,192	What are these wires for? Have been doing some engine purtification, and came across these two wires (black one on the left, green one on the right, both rolled up) that were just cut off and hanging. I have no idea what they used to go to, nor how long they have been cut. They look like original wires. Any ideas? Thanks! junk Attached Images __________________ ~~~~~~~~~~~~~* "The unexamined life is not worth living" -Socrates ~~~~~~~~~~~~~* '71 GMC Suburban 4x4

07-02-2011, 04:02 PM	#2
GMCjunkie Dude...I'm a CHICK Join Date: Jul 2000 Location: Lakeland Georgia Posts: 6,192	Re: What are these wires for? Just doing some superficial stuff, and last pic, my helper, he bout "helps" me to death sometimes. lol Attached Images __________________ ~~~~~~~~~~~~~* "The unexamined life is not worth living" -Socrates ~~~~~~~~~~~~~* '71 GMC Suburban 4x4

07-02-2011, 05:01 PM	#3
dmack91 Registered User Join Date: Jan 2011 Location: Redmond, OR Posts: 763	Re: What are these wires for? The horn wire is a heavy, green one. Do you have a working horn? __________________ 68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress

07-02-2011, 05:15 PM	#4
pat 70/71 Registered User Join Date: Nov 2009 Location: newbury park california Posts: 1,038	Re: What are these wires for? Not 100% sure on the wires but I am 100% sure your little helper will grow up faster than you will ever expect!! have fun every chance you get& keep him close to your heart&your side. cheers, Pat

07-02-2011, 07:35 PM	#5
GMCjunkie Dude...I'm a CHICK Join Date: Jul 2000 Location: Lakeland Georgia Posts: 6,192	Re: What are these wires for? dmack91, yes the horn works, Pat70/71. Yep, I know this darlin. one of my other helpers (Justin, age 21) will graduate from boot camp in just under 2 weeks. He was my "truck buddy" up until he left for Lackland AFB. There is 20 years between my oldest and youngest children, Rick is my oldest at 25 and a daughter, Candace in the middle at 23, PLUS 3 grand babies. __________________ ~~~~~~~~~~~~~* "The unexamined life is not worth living" -Socrates ~~~~~~~~~~~~~* '71 GMC Suburban 4x4

07-02-2011, 07:42 PM	#6
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: What are these wires for? I see that you still have the remains of the Transmission Controlled Spark, (TCS) and my guess is the wires are part of the sensing for the system. One from the transmission to let the vacuum advance work when the transmission is in high gear. The other one is to let the system know when the engine is warm enough to allow the vacuum advance to work. Looking at the engine, I doubt if any part of the TCS is hooked up to it anymore. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

07-02-2011, 07:47 PM	#7
GMCjunkie Dude...I'm a CHICK Join Date: Jul 2000 Location: Lakeland Georgia Posts: 6,192	Re: What are these wires for? Jim, thanks. If that is indeed what the wires are, will that effect the performance of my truck? thanks junk __________________ ~~~~~~~~~~~~~* "The unexamined life is not worth living" -Socrates ~~~~~~~~~~~~~* '71 GMC Suburban 4x4

07-02-2011, 07:58 PM	#8
71longbed-brew Registered User Join Date: Sep 2008 Location: Salem Oregon Posts: 64	Re: What are these wires for? not to knit pick but you might think about getting rid of that flex fan and a fan shroud never hurts .... best of luck __________________ 350/th350 DNA (Chinesium) Heads Performer Intake 1905 AVS2 Edelbrock 3.42 Eaton Posi

07-02-2011, 08:01 PM	#9
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: What are these wires for? The truck will run better without the system being hooked up. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

07-02-2011, 08:27 PM	#10
GMCjunkie Dude...I'm a CHICK Join Date: Jul 2000 Location: Lakeland Georgia Posts: 6,192	Re: What are these wires for? 71 longbed. I just bought the flex fan, had electric...no thanks. , but I agree with you on the shroud. Its commin Jim. Thanks again. so I can just remove the plugs that they are attached to? Is there anything else with that system I can get rid of? I hate having non functional, non useful junk on my truck that could be removed and clean up the engine compartment. __________________ ~~~~~~~~~~~~~* "The unexamined life is not worth living" -Socrates ~~~~~~~~~~~~~* '71 GMC Suburban 4x4

07-03-2011, 12:12 PM	#11
beautimus Registered User Join Date: Mar 2002 Location: woodstock, alabama, usa Posts: 938	Re: What are these wires for? Detonator........ just kidding! __________________ i survived cancer and kidney stones, but my kids are killing me.



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