Is Car 1 LOTO? Are these GCS or 411’s?
Lights should be driven off of outputs from the RS boards.
My first thought is a duplicate I/O somewhere. Assuming Car 1 is off I’d be looking at I/O’s in car 2. If it’s a GCS, recalc CRC and see if that clears up the issue. If you leave Car 1 on MRI but powered up does the issue go away?
