Blown fuse

I continue to blow the fuse on the switched power side the accessory switch. Any ideas where to start

 

Probably wouldn’t hurt to have some truck info, otherwise “you have a shorted to ground wire between the switch and all your accessories” will be the only help anyone can give....

 

bad ground. Broken wire. Exposed wire . Loose battery connection. Corroded battery connection. Bad battery. Put a bigger amp fuse in it

 

Yep, guess I missed a few!!

 

Dirty slot where the fuse goes. Bad corroded plug. The list goes on and on Goodluck

 

Bad grounds dont blow fuses. Oooops neither do open wires. Exposed wires well not quite. Loose batteries.......... nope. Corrosion .........nope doesn't blow fuses either. And worst of all........."put in a bigger fuse".

If you dont know anything about electrical theory please dont offer advice. You could literally burn someone's truck down with this response. Never add a fuse to a circuit that is higher than the recommended amperage on the panel. And stay away from truck stop fuses with no name. I have seen them pull more than 3 times the rated amperage before blowing. Stick with known names like "little" and "Buss" for reliability and circuit protection.

A good alternative would be to install a resetable breaker in the fuses space of the "same amperage". Not more. So that in case of a repeat or intermittent issue you arnt going through fuses. In time with repeat tripping the breaker will fail as well.

To the OP. Good luck tracing down your short to ground. Thermal cameras are the best devices around for finding short circuits in short order.

 

Oops ur wrong they sure can blow a fuse if a bare hot wire grounds out to metal going down the road

 

Poor grounds and corrosion cause what is called a voltage drop. It will actually reduce the voltage and current flowing in a circuit.

Things that blow fuses are shorts to ground, shorts to other circuits and overloading a circuit.

 

That is by far the #1 reason glad someone mentioned it

 

People used to put a penny in behind the fuse in the old houses to run a/c they didn’t care if house burned down they were burning up already.Like wrapping tin foil off cig pack for a vehicle fuse. Ahh the good old days. Hired we ever survive?