Check the shut off switch at door & the one at the headlight switch. Sounds like a short in one.
SOURCE: #2 Fuse, 96 Blazer
for the dome light there is a dial by the lights and turn that up and down can't remember which way but that should turn that off. i think that should work thats what happend to my moms blazer and i just bought one so i know what ur talking about.
SOURCE: engine 1 fuse keeps blowing when you turn the key
Engine 1 fuse powers the computer and some sensors. I had this same problem on a 98 chevy van 3500 and found the wire going to one of the oxygen sensors had shorted out on the heat shield. Inspect the wires going to all of the oxygen sensors. On this van one of the oxygen sensors on the driverside the wire was laying on the heat shield which eventually rubbed through the wire and shorted it out blowing the fuse. Your short could be on a different sensor but check all of the oxygen sensors because the wire runs so close to the sharp heat shield.
SOURCE: large 20amp fuse keeps blowing
Change the fuse for the correct size AMP.
More details about Power Center Distribution, check the Section 8W Wiring Diagrams
Good luck.
SOURCE: interior dome lights wont activate wh en doors
If none of the interior door lights work, check the fuse, and check the bulb. If they are both ok, then you may have a bad relay or switch but you will have to trace the wiring which is a pain.
SOURCE: dome light keeps blowing fuses
Has your son added a non standard Radio (they usually do ) this modification may be your problem , check the wiring at dash, also i Pod or phone chargers plugged into cigarette lighter socket can be a problem. Bigger fuses should NEVER be substituted unless the original circuit rating has differed from original manufactures spec and suitable adjustments made ie Higher wattage H/lamps or added on acessories etc.
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