Tapping into the brake light switch

[69hurstolds]

1st design. Classic industries apparently is going to be repro-ing these it seems under DR460 part number for 14.99 list price. Don't know when they'll release them.

2nd design

 

[ssn696]

The bracket for the switch has two mounting holes for the G-body (one for the A-body). You can also install a second switch in the unused hole to achieve the same result.
https://gbodyforum.com/threads/200-4r-tc-lockup-kit-build-your-own.58098/

 

[84 El Camino 231]

I dunno, but mine came out of the 2002 Firebird I got the Series II from. It had (2) 2 pin connectors. I think I had to send both signals to the ECM, but not sure now.

You installed a Series II into a gbody? I have the same interest, you're my hero!