Quote:
Originally Posted by yellow400ex05
also would having no alt/fan belt affect the way the headlights at all? even if the battery has good charge?
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I wouldn't think so - The only issue with having no belt to your alternator would be that the alternator wouldn't be charging your battery and the truck would run very long off the battery. The lights may dim but it wouldn't affect which bulbs illuminate. Another thing to check - place your hand on the plug on the back of the headlight and the wiring close to the plug when the lights are on. Is the plug/wiring hot or warm? If so, that's a good indication that there is a high resistance value (corrosion) in your circuit which is requiring more amperage to get the volts flowing.