[BonzoHansen]

Let’s review – is this correct?

*This is a 1989 Camaro RS automatic car (before & after swap).
*No starter when key is in START. Starter will crank if jumped.
*Temp gauge pegs on START (how about RUN?). Temp sender isn't connected
*Brake light lights on START (how about RUN?)

It did this before swap, still does it now. So not really swap related?

Tried:
IGN switch
NSS

Quick thoughts:
*Does it have VATS? I have no experience with VATS and don’t know when it started.
*Does NSS have adjustment room?
*You have a manual w/wiring diagrams?
*Is there any kind of weird interlock or brake pedal switch that needs to be correct to start?
*Was the temp sensor bad before the swap? Was it hooked up then?
*What is battery voltage as mesured at battery with volt meter?

Edit: I found an 86 diagram via TGO. No vats, no brake switch or other type of circuit interrupt.