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Check the battery for voltage. Check the wiring harness near the battery and voltage regulator for damage (fusible links). Headlight switch or wiring to it may be done.
Post up your trucks specifics (year, make, model) and somebody can probably hop on with some helpful diagrams.
Generally, you just check for power into and out of the headlight switch
You've done that
If it has power in, the fuse link is good
Did you check the connector and the plastic for being melted or the terminals black?
Next for me is to pull the fuse panel off and check it for being burnt behind the fuse then start ohming out wires
Fun stuff
since you mentioned fuse 2, I assume you are talking cluster illumination and not headlights/taillights? If so, have you rotated the headlight **** to adjust the brightness?
Just off the wall here, but that fuse #2 is a 3 amp fuse that only gets power in when the headlight switch is on. Most of the fuses get power directly from a buss bar .... but not #2 which is dedicated just for instrument illumination and is only used to protect the head light switch from shorts, it serves no other purpose and unless and until the head lights or just park lights are turned on, it will have no power through it.
If you're just testing fuse #2 for volts, it will not have any unless the lights are on. If testing just across the fuse for continuity, if it has none, then it's blown ....
Originally Posted by Edhetling89
Yes I have turned the **** and pulled it got power to and from the switch but no lights work
And if fuse #2 is blown .... there you are .... but maybe you knew that already.
Ok so I still have no power to # 2 with the light switch pulled out and turned but replaced the dimmer switch on floorboard and now have headlights and marker lights no blinkers still
Could be a few things working against you; try also checking for voltage at your blinkers, and then check ground continuity from bulb socket to frame.
Also a good time to check ground continuity from frame to batt, frame to cab, cab to batt, and batt to block.
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