tracking down a short?

[bad_religion_au]

every couple of days my 76 40 is blowing the fuse that fuses the dash lights, parking lights, and tail lights... any advice on finding the problem?

 

[IDave]

My 71 did that. Tracked it down with a multimeter, and it was the contacts in the connector to the light switch, which had corroded and caused high resistance resulting in high draw and blown fuses. A mini-file on the contacts fixed the problem.

 

[hammerhead]

Are you running factory goods or aftermarket?

My '74 had trashed out tailights when I got it so I replaced them with aftermarket units that could be mounted up high away from rock danger. I had the same problem blowing fuses the first few times I drove it because the bulbs were a larger draw than the stock little bulbs. I upgraded the fuse to handle the added amperage and problem solved. I haven't needed to change that fuse for many years now.

 

[CruisinGA]

Mine was doing the same, turned out the harness just behind the DS taillight had melted and fused together, and the entire harness was grounding on the frame.

 

[bad_religion_au]

stock lights... don't tell me this is going to be hard new i got off too lightly replacing the driveshaft uni joint (the bearing caps fell out after i removed the C clips, which came out with one twist of the screwdriver)

 

[Bennett]

mine was shorted at the license plate light wiring where it went through the body..

 

[bad_religion_au]

mine was shorted at the license plate light wiring where it went through the body..


didn't even think of the license plate holder


thnx