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I’m installing my new engine harness from lectric limited and can’t find what these two wires go to (black and blue) I also do not know where this hose goes to.
Last edited by c.martin; Feb 6, 2023 at 09:20 AM.
Reason: change of title
I’m installing my new engine harness from lectric limited and can’t find what these two wires go to (black and blue) I also do not know where this hose goes to.
No sure anyone can help with the vacuum hose as that engine is modified from original.
I can help with the first photo, the Blue & Black wires go to the anti-theft hood switch, if it was a snake it would have bit you...
What I see is a 3 port intake manifold vacuum fitting.
On the 77 the 3 port was used only if the car was optioned with A/T transmission and cruise control.
From the factory the center port would have connected to a short section of rubber hose then to a metal line to vacuum modulator on trans.
The line your holding in your hand would have fed the cruise control transducer.
No sure anyone can help with the vacuum hose as that engine is modified from original.
I can help with the first photo, the Blue & Black wires go to the anti-theft hood switch, if it was a snake it would have bit you...
What I see is a 3 port intake manifold vacuum fitting.
On the 77 the 3 port was used only if the car was optioned with A/T transmission and cruise control.
From the factory the center port would have connected to a short section of rubber hose then to a metal line to vacuum modulator on trans.
The line your holding in your hand would have fed the cruise control transducer.
that’s what I thought but it turns out mine is just broken. Am I able to plug the hose and everything work but the cruise control?
The coolant lines are for the overflow tank. One goes to a nipple on the radiator neck right below the cap. The other one is just routed down and out, so any coolant spill goes on the driveway and makes a mess lol.
The green wires are for the AC compressor. They also run to a solenoid near the throttle lever on the carb. It's supposed to kick up the RPMs when the AC comes on. If you don't have the original carb (and it appears you don't) you probably don't have the solenoid. You can just zip tie that connector to something so it doesn't get caught in moving parts.
Word of advice that somebody's bound to mention eventually: the rubber fuel hose and the dangling fuel filter are an engine fire waiting to happen. At some point you will want to get a steel fuel line to run from the pump to the carb. Since you don't have an original carb you will most likely need to make it, or have it made.
Last edited by stevedinino; Feb 6, 2023 at 09:53 PM.
The coolant lines are for the overflow tank. One goes to a nipple on the radiator neck right below the cap. The other one is just routed down and out, so any coolant spill goes on the driveway and makes a mess lol.
The green wires are for the AC compressor. They also run to a solenoid near the throttle lever on the carb. It's supposed to kick up the RPMs when the AC comes on. If you don't have the original carb (and it appears you don't) you probably don't have the solenoid. You can just zip tie that connector to something so it doesn't get caught in moving parts.
Word of advice that somebody's bound to mention eventually: the rubber fuel hose and the dangling fuel filter are an engine fire waiting to happen. At some point you will want to get a steel fuel line to run from the pump to the carb. Since you don't have an original carb you will most likely need to make it, or have it made.
Thank you for the information and do you know where I could get one of these made?
When I had this problem, I bought steel tubing at Auto Zone and then got a tubing bender and flaring kit at Harbor Freight. I proceeded to butcher all that tubing up, bought more, and eventually taught myself to make a halfway decent fuel line. This is the joy of owning a 50 year old Chevy. Some stuff you can buy, some stuff you will have to make. I have a mechanic that takes care of the family cars (I have no time for that anymore) but he won't touch the Corvette - it's just too old. If you're lucky enough to find someone who knows how to work on these old Corvettes, it's usually not cheap.
When I had this problem, I bought steel tubing at Auto Zone and then got a tubing bender and flaring kit at Harbor Freight. I proceeded to butcher all that tubing up, bought more, and eventually taught myself to make a halfway decent fuel line. This is the joy of owning a 50 year old Chevy. Some stuff you can buy, some stuff you will have to make. I have a mechanic that takes care of the family cars (I have no time for that anymore) but he won't touch the Corvette - it's just too old. If you're lucky enough to find someone who knows how to work on these old Corvettes, it's usually not cheap.
Wiring and hose for late 1977
