1974 Brain Box saves the day.

Daves69 said
A couple threads on ECUs...........

Correct ballast resistor for standard to electronic conversion
Whats in the orange box ?

A 5 pin I've had in a box on a shelf indoors for years continues to leach. Lower picture taken today........
View attachment 1715592582

Those ECU threads were great info to read. Even picked up a brain box schematic off one of them.

Thanks . .