Found the problem.....

The wiring harness became brittle and shorted the idle switch connector on the ECU.

This MELTED the pin 18 that comes from the socket to the circuit board. It doesnt look like it burned the board, I'll just have to plug it in and try to see if its permanently damaged.

I'm in the processo of rebuilding the main ECU plug on one end of the harness.

Lets see how this works out......