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My fuse for the taillights and i think dash light keeps blowing in my 89 montero. have removed all the bulbs, still does it. can't find any exposed wires
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the fuse for the tail lights blowing all the time indicates a dead short in that circuit
first place to check is the bulbs and the condition of the bulb holders
a single point bulb in a 2 point holder will cause the short as will corroded wires /broken wires
fuses blow because of dead shorts or excess current draw
to blow a 15 amp fuse indicates a dead short
by disconnecting the rear lights , the problem is in something else you have replaced
could be a problem in the head light wiring
Tail lights could be bulbs, however, if your dash lights are out , you'll want to check all fuses first. If that's not it, you'll have to look at the wiring to see if it has any breaks in it or if any wires are severed or burnt in half.
have you recently installed a new radio ? I have knowen people to install radiosincorectly the dim wire behind the radio shows as a earth. however when you turn headlights on this becomes a positive. if you have wired this wire to your sterio this is whyyour dash lights & internal cab light etc keep blowing.. if your wondering why sterio still works is because its earthed through the aerial or mounting bolts.
check each of the terminals of those bulb you mentioned. wonder if there's a relay associated to this circuit, check for short if this is the case. remove all the light bulbs [of course - the dash may not be necessary (it's a PITA) & let's hope that it's not the culprit]. visually inspect those bulbs & replace if something unusual. put back the relay if it has no short, turn on the switch, let's hope the dash lights up & it won't blow the fuse anymore, otherwise look for uninsulated wire touching the chasssis or ay metal part of the car. you may continue replacin the bulbs.
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