NEHI Orange

the 20 amp fuse for the directionals and reverse lights continues to blow after very little use, have owned car for 12 years, it never blew once until this year and now it virtually blows each time I take it out. All stock, no mods, good driver condition, all the rest of the electrical is sound. I have changed the fuse now about 10 times. The fuse that I took out the first time it blew was 20, so I think that's the right amperage. Any ideas?

henrikse

Blowing a 20 amp fuse means you have a dead short, Does it blow right away or only when you use turn signals or put in reverse?It could be simple as a pigtai; shorted center to ground or metal. It could be a wire rubbed thru at confined point. Believe the harnedss exits around back drivers side and runs along frame to rear lights and up front down driver frame rail. If you have meter put in on ohms and go on ground and fuse side that goes out to lights. One side will be 12 volts without fuse in go to other clip and if your ohmeter is showing short you can set someplace to watch and move around wires at pigtails front and rear and where harmess exits cab to try to isolate

Richard454

As Henrikse said...dead short

Just a guess as I have seen it more than once- look at the green and pink wires going to the side of the transmission- often times the wires ended up touching the exhaust- melting the wire(s)and there's your short.

And if that's not it- you can simply disconnect the rear body harness at the top of the fusebox. That controls ALL the rear lighting- disconnect it and no fuse blows- you can start there at the back of the car.

Richard

NEHI Orange

Thank you guys. Will try to inspect for insulation problem this weekend. What a pain....

MelWff

I had the same issue, blew every time I put it into reverse, wire touching exhaust.

L88Plus

You obviously have a homotron in your system.

Homotrons are gay electrons that blow fuses.

Get it out and you'll be fine.