70 chevelle [Archive] - Chevelle Tech

: 70 chevelle


ACHADEA670
Dec 6th, 08, 8:58 PM
does anybody know what the relay on firewall gutter is for?:confused:

sparky1698
Dec 6th, 08, 9:17 PM
Transmission Controlled Spark or TCS for short.

Dave Birdwell
Dec 7th, 08, 8:13 PM
Yep, TCS, there should be two plugs on it, one with a black wire, and one with a green and a black, IIRC....