Hi Phil,
I'm still perplexed by your problem.? Since you have your Power Cab displaying track current, what is the last reading you see before the system resets?
Are you maybe using a wall transformer other than the one that came with Power Cab?
At the moment, I'm still thinking something is pulling down the Power Cab's power supply.
If you are not reading anything when no loco is on the track, that is good.
Locos that are in need of maintenance could draw more power than one in tip-top shape, but a loco that does that I don't think would cause the Power Cab to reset.
What scale do you model?
Regarding your high resistance, that still probably isn't causing your resetting problem.
Allan?
Wiring for DCC
