[Supras] Odd electrical system issues.

[Bob]

If I were to locate and sever this connection (WTF does the ECU need to be
able to turn on the headlights for anyway?  Or maybe it wants to know when
the headlights are on?) hopefully this won't throw a code.

It would be logical for the computer to kick up the idle to make up for the
increased load of the headlights...

It may be logical but I have no idea if that is true.

I do have access to the 87 and 89 wiring diagrams if Alldata wasn't too lazy
to scan in both because they assumed they were the same.

Bob