first of all, I had a squeal coming through the stereo speakers when the park/dash lights were on. then I pushed the dash dimmer up,and the fuse popped. then I opened up the dash and replaced the fuse. then moved wires around , carefully, the fuse popped again. so I replaced it with a 15 amp breaker, then turned the lights on again and it popped it and smoked the dimmer switch . now I have no power at all to the fuse. im at a loss. why would there be no power to the fuse? is there some type of pre-fuse or does the power run to the dimmer switch b-4 it goes to the fuse panel??? I have no markers,dash lights.
9900i dash/marker lights out
Discussion in 'International Forum' started by gator21, Sep 18, 2014.
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What is the location and description of the fuse that keeps blowing? What year is the truck?
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its a 2002 9900i. its the 15amp fuse labeled dash/marker/clearance. think it was 8th row,3rd down. can verifiy that in the morning.
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Check if F3-C is tripped/blow. That is the third row from the left, third one down. This protects a few other circuits including F8-C.
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F3-C is battery power to the "Cab and trailer lights relay". When you turn on the lights this relay is triggered and F3-C then powers more circuits. First, it powers tail lights to the trailer socket. Then it powers F8-C. After F8-C, it powers the dash, cab clearance lights. Breakers really shouldn't get hot. It may be hot due to a bad connection at the socket it plugs into. Check to make sure the plastic isn't melted. F3-C should be 30 amps. If only F3-C is hot but F8-C is normal, I would say the trailer socket or wiring is the problem. Check your trailer cord too.
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Thanks, I replaced F3-C and now it's normal temp, maybe that solved the problem, if not I know where to look next, thanks again
Heavyd Thanks this.
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