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Old 07-17-2011, 09:27 PM   #1
72freak
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What are these wires for?

This is a V-8 3 speed truck. The engine was replaced with a later model 305.

I know the pic is small but what is the thing on the firwall and what are these wires for. One is a one wire plug and theother is a 2 wire plug. They were not hooked up. The truck runs fine and Im not getting any power through them.

I dont remember their colors at the moment.
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Old 07-17-2011, 09:32 PM   #2
67_C-30
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Re: What are these wires for?

I don't know what they are, but my '70 CST has them. Most of my other trucks don't.
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Old 07-17-2011, 09:38 PM   #3
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Re: What are these wires for?

Does it have AC?
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Old 07-17-2011, 10:03 PM   #4
bosco200
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Re: What are these wires for?

Is the one with a plug on it brown with a white stripe?
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Old 07-17-2011, 10:22 PM   #5
72freak
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Re: What are these wires for?

It is not an AC truck. I will get the colors tomorrow.
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2001 Chevrolet 2500HD Crew 6.0
1999 Harley Davidson Electra Glide
1972 Chevrolet C-20 Custom Camper "Dump Truck"
1972 Chevrolet C-20 Suburban "Big Green"
1969 Chevrolet C-50 Wedge Hauler "Leonidis"
1966 C-10 2x4 short fleet 327 4 speed "Race Truck"
1952 Plymouth Cranbrook "Rican" (my grandfathers)
1931 Ford Model A Coupe "Black Beauty"
1930 Ford Model A truck "Club Cab" 4x4


Rottenwood Garage and Speed Shop.....where everything must be racy!

It's not just a hobby..It's a LIFESTYLE!!!

Thanks for nothing Barrett-Jackson

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Old 07-18-2011, 08:52 AM   #6
72freak
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Re: What are these wires for?

Ttt
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2001 Chevrolet 2500HD Crew 6.0
1999 Harley Davidson Electra Glide
1972 Chevrolet C-20 Custom Camper "Dump Truck"
1972 Chevrolet C-20 Suburban "Big Green"
1969 Chevrolet C-50 Wedge Hauler "Leonidis"
1966 C-10 2x4 short fleet 327 4 speed "Race Truck"
1952 Plymouth Cranbrook "Rican" (my grandfathers)
1931 Ford Model A Coupe "Black Beauty"
1930 Ford Model A truck "Club Cab" 4x4


Rottenwood Garage and Speed Shop.....where everything must be racy!

It's not just a hobby..It's a LIFESTYLE!!!

Thanks for nothing Barrett-Jackson

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Old 07-18-2011, 09:57 AM   #7
bosco200
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Re: What are these wires for?

Did u get the colors of the one with the plug in...cuz I have the same one and dont know what it goes to either.
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Old 07-19-2011, 10:26 PM   #8
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Re: What are these wires for?

a bigger picture may help
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Old 07-19-2011, 11:28 PM   #9
70C10Toejam
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Re: What are these wires for?

Looks like the TSS (transmission spark suck-a-nator---an early attempt at emissions improvement ) it works with a vacuum switch below and doesn't allow the vacuum advance to work unless the tranny has shifted into 3rd. The red wire piggy-backs off the radio power.
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Last edited by 70C10Toejam; 07-19-2011 at 11:33 PM. Reason: found the other pic
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