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K
Keith Gray Posted on May 13, 2018

How to replace dimmer switch 1998 f150

Dash lights are dim can't brighten them

1 Answer

Derk Williams

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  • Contributor 18 Answers
  • Posted on Oct 10, 2019
Derk Williams
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Joined: Jul 27, 2011
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The dimmer is on the headlight switch it is a turn style type variable resistor with the final click turning on the courtesy light in the cab as well as the cargo light for the bed. you will have to take off the instrument cluster cover held in by clips and a couple of screws then with a little effort to get your hand in behind thee cluster assembly you can reach the top of the headlight switch and there you will find a little spring loaded button push down on it and this will allow you to pull the switch knob and shaft out of the switch then with a spanner wrench or a pair of needle nose pliers stick them into the 2 little holes on the nut that you pulled the shaft and knob out of. unscrew the nut and then pull the switch out to where you can disconnect the plug that attaches it to the wiring harness replacement is the reversal of removal but you can just push the shaft back in without pushing the button again and if it really was the dimmer on the switch causing your problem the you should be good to go. good luck and let there be light!!!

5 Related Answers

Anonymous

  • 1990 Answers
  • Posted on Jan 12, 2009

SOURCE: lights dim and then brighten

This is your Alternator. Check the Battery Cables for Tightness in Addition.

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Anonymous

  • 1 Answer
  • Posted on Jan 22, 2009

SOURCE: 1993 Pontiac Grand Am dash light dimmer switch burned out

i found mine at an O'Reilly store but junkyards are good

Anonymous

  • 1 Answer
  • Posted on Aug 30, 2009

SOURCE: my 2002 f150 dash board lights do not work. The

You might need a new cluster .... or it is p[ossible you installed a new stero in the vehichle and one of the wires that were not used from the harness to connect to the cd player may not have been wrapped and are causing a ground.

Anonymous

  • 30 Answers
  • Posted on Sep 24, 2009

SOURCE: 1992 buick lesabre no dash lights but all other

It might just be a fuse look at the fuses and check them.

Anonymous

  • 64 Answers
  • Posted on Oct 08, 2009

SOURCE: I have a 04 Toyota Tacoma. I have short in the dimmer switch.

It cold just be a fuse that is loose in the fuse box causing the dash lights to come on and off. Or potentially a loose wire from the fuse box the dash lights.

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