Okay, Here's what I've found.

I removed all 4 large fuses and tested them, not knowing which one is Fuse 1 (my schematic isn't great), just to be sure. They all seem to be within spec of 0.3ohms or less, even when jiggling them around.

I put my voltmeter on A1 coil wires. I'm not too sure when it should be live but at no point did it have battery voltage (or any as far as I can tell) BUT I did put the coil wires 'direct' to the battery (fused, just in case) and the contactor closed just fine.

Say, when is A1 suppose to be energized? (EDIT: Sorry, I just saw that it should be when activating travel. I did that but no voltage at the coil for A1).

So, the problem seems to be in the control wiring or the switching side of the controller.

I wish I had a proper schematic for this thing. For the A1, I show 41 on the negative side but 42 on the positive side but the controller schematic I have shows it to be 10.

Do you have any other suggestions? I only have an hour or two per day to tackle this thing and it's not the easiest to work on but I'll keep at it as long as you are willing to help. :)

Thanks so far!