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I found the problem. I fried the primary battery on/off switch. It also fried the 3 lever light switch. No idea how but it fried both. I have it "rigged" enough to work. Parts are on order.

I found an O ring wire connector under the nut at the bottom right of the picture with the wire end melted off. This picture shows a wire going somewhere. I believe this is my problem. I just don't know where this wire would go. Everything else in this picture is connected on my truck. I...

I am starting to think it may be the battery "top" switch on the dash. If it was in the off position when I had the spark storm could it still have been damaged? According to the diagram in the TM the current goes from the batteries, to the starter, then to the switch. It seems like the...

So the dilemma continues.......disconnected the batteries, uninstalled the modifications to start the truck, and put it back to stock. Installed the new PCB. Re-connected the batteries and zilch. Nothing at all. No lights, no gauges, no abs, and absolutely no juice to starter......grrrrrr

I checked the TM. It looks like all lights get power from the PCB according to the diagram.

So we wired up the wire from the alternator to the starter, removed the shutoff solenoid, bridged the plug, and jumped the starter with the screwdriver. Truck fired right up. No lights. The low air light and the parking brake indicator lights work but no others. I shut off the truck with the...

Wiring up everything now. Will the lights on the truck work?

Positive alternator post to positive starter post? Would jumper cables work for that?

Upgraded 21SI clone. 70 Amp

Any suggestions on how to rig it to work on an A2 truck? I am under a HUGE time crunch. I am supposed to leave at 4 am for Evansville IN to go mow down there. I can order a new box but it will put me back a few days and don't have a second to spare. I watched your video 3 times and I am...

I did an oil change today and my semi sized oil filter wrench ever so slightly cut through the insulation on the wires underneath the oil filter causing a spark storm. I taped up the cut in the insulation with electrical tape and went on to deal with a spring brake bladder replacement and wheel...