NAS 110 Front Defroster Light

[bjf]

How come my front defroster light on the gauge binancle only lights up once in a blue moon. What should I look for to figure out why it isn't working. Funny enough I took the truck on a mud run and it worked perfectly again until I washed the truck.

[bjf]

come on nothing?

[leastonce]

when it's not working open it up ... put in a probe and see if you get a voltage ... if you do then the bulb connections need attention ... if you don't get out the wiring diagram and look for a crappy connection.

sorry not much of a response but might spur some of the more learned members on the board to respond crushing my inadequate suggestion!

[bjf]

I need a voltmeter

[woldd90]

I need a voltmeterFluke is the best... But, you can get one from Harbor Freight for $3.

[bjf]

They sell fluke at sears. good enough for me

[bjf]

So I really don't know what I am doing with this or how to work a voltmeter. I opened the light binnacle and touched the bulb connectors with the voltmeter and I got a reading but the bulb doesnt work. I tried extra bulbs and I had an extra bulb holder but nothing. Will the windshield get hot when working?

Any idea what to do?

[bjf]

What is the story with the relays? Do they ever go bad? I saw there are like four or five of them that are all the same. I switched them around a bit hoping that would do it. Any ideas?