Wrong wiring harness
Thread Starter
Heel & Toe
Joined: Jan 2006
Posts: 20
Likes: 0
From: ERIAL NEW JERSEY
Wrong wiring harness
I am in the process of replacing the dash harness on my 75 and ran into a problem. After several wrong wiring harnesses came to my house it was determined that the harness was from a 74. The engine bulkhead connector was the right one for a 74. The car is titled as a 75,,, is this possible?
Le Mans Master
Joined: Mar 2001
Posts: 6,640
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From: Ann Arbor Michigan
Drifting
Joined: Jul 2002
Posts: 1,944
Likes: 20
From: The only Corvettes in Highett Victoria
Left over parts???
Gary,
I doubt that, and here's why. The 1974 had a mechanical tach and a non-HEI distributor that had a ballast resistor in the wiring loom. The 1975 model had both a non-tach drive HEI distributor AND an electric tach.The HEI uses a single 12 volt source from the ignition switch with no ballast resistor and the tach requires a signal wire from the HEI unit.
Therefore, a '75 car could not run with a '74 wiring loom. If a leftover '74 loom had somehow found itself paired with the car on the '75 production line, the assembly line workers would not be able to connect some of the fittings and would call a supervisor who would rectify the problem.
Look elsewhere.
Regards from Down Under
aussiejohn
4 months to go
I doubt that, and here's why. The 1974 had a mechanical tach and a non-HEI distributor that had a ballast resistor in the wiring loom. The 1975 model had both a non-tach drive HEI distributor AND an electric tach.The HEI uses a single 12 volt source from the ignition switch with no ballast resistor and the tach requires a signal wire from the HEI unit.
Therefore, a '75 car could not run with a '74 wiring loom. If a leftover '74 loom had somehow found itself paired with the car on the '75 production line, the assembly line workers would not be able to connect some of the fittings and would call a supervisor who would rectify the problem.
Look elsewhere.
Regards from Down Under
aussiejohn
4 months to go
Thread Starter
Heel & Toe
Joined: Jan 2006
Posts: 20
Likes: 0
From: ERIAL NEW JERSEY
Wrong wiring harness
Aussie,,, thanks for the reply. It's not really a big deal i guess,, i finally have the right harness and all is good. It was just a problem when i was trying to replace the original. Yes i have the hei and the electric tach.
