Legacy GP-7. Is the triac for the electrocouplers in the center rail side of the coupler or in the outer rail side?
In case you are curious, this loco spontaneously opens its rear coupler, but only in very specific track locations and only if it is mated to a car with a metal coupler/truck assembly. If the triac is in the outer rail side it could conceivably be an electrical problem. I could of course just change the coupler, but I'd like to understand the problem,
Thanks in advance.