Re: Fuse help!!!
Have you taken a test light or volt meter and checked to see that you have power going into the fuse holder when the light switch is turned on AND power coming out of the 4 amp fuse if you do have power going in when the light switch is on?
If you do have power going into the fuse, is the fuse blowing?
If power is going into the fuse holder AND the fuse is NOT blowing, you must have an open in the wiring from the fuse holder to the dash lamps. You just need to trace the wiring from the fuse holder towards the dash lamps and see where the electrical break/open is in the wiring. Could also be the dash lamps don't have a good ground, you need both sides of the circuit to be "complete" for light to happen.
If instead power IS going into the fuse holder AND the fuse keeps blowing, you must have a short OR too large of a current demand as Everett mentioned above, possibly due to additional lamps or other electronics getting power from this circuit.
If a short circuit appears to be the problem, you can purchase a short circuit tester kit which consists of an automatic resetting thermal circuit breaker that you temporarily install in place of the fuse, and a small handheld inductive amp meter that you hold along the wiring which will deflect the handheld inductive amp meter needle in the direction of the location of the short. If/when you get past the location of the short, the needle will point the opposite direction. This is an invaluable tool for tracking down the location of a short.
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