I had a problem the other day. This is on a 96 12 Valve truck. I had the batteries unhooked to do some welding on the truck. Hooked them back up and all I got was a click, I had the hood open, and saw a quick , but small arc flash on one of the batteries. I cleaned the battery cables, and how it's ok, but I have no headlights, tailights, speedo, tach, voltmeter, feuel gage, or radio, I checked all of the fuses on the side of the dash, as well as the larger ones in the black box behind the driver's side batters. Nothing was blown. Any ideas of what to check next, or what could be wrong? I really need to get it fixed very soon, as I have to pull a trailer this weekend.

Thanks in advance

Mike

 

When you said you checked the fuses, did you do so visually or with a volt meter?

Could be corrosion at the terminal between the lug and the power wire.

 

Have you checked the fusible links at both batteries ?