Team Chevelle banner

Wiring Harness

840 Views 5 Replies 4 Participants Last post by  Sparkey600
I just changed all the wiring harness in my 1970 chevelle SS 396, I am left with two plugs by the back of the distributor on the fire wall. One looks like an S and the other one is straight. I looked in the factory assembly manual and it looks like there should be a T.C.S. Relay on the fire wall. Does any one know what these plugs are for and what does the T.C.S. relay do ?

1 - 1 of 6 Posts
Re: T.C.S. Switch And Relay ?????????????

Trans. control spark relay and solenoid? I think it controls vacuum advance when shifting. Mabey someone else can shed more light on it's function.
1 - 1 of 6 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.