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carguyjosh, ASE Certified Technician
Category: Dodge
Satisfied Customers: 2172
Experience:  ASE certified technician, 16 yrs in field
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How to diagnose bad headlight switch

Resolved Question:

how to diagnose bad headlight switch
Submitted: 7 years ago.
Category: Dodge
Expert:  carguyjosh replied 7 years ago.

What type of problems are you having and do you have a test light or multi-meter?


Thanks, Carguyjosh

Customer: replied 7 years ago.
replaced headlight bulbs, they work. now i dont have dash lighs... or tail lights
Expert:  carguyjosh replied 7 years ago.

The first thing that I would like to have you check is the #1 fuse in the fuse block inside of your truck.

This fuse needs to have battery power going through it all of the time.

If this fuse is good, we will then need to remove the headlight switch for the next testing steps...


Please let me know what you find...Thanks, Josh

Customer: replied 7 years ago.
all ready did that
Expert:  carguyjosh replied 7 years ago.

Okay. What you need to do is remove the headlight switch from the dash. Once the headlight switch is out, first test to be sure that there is power at the (pink with red tracer) wire.

If power is present, turn the headlight switch on and check for power on the black with a yellow tracer. If there is no power coming out of the headlight switch on this wire, the headlight switch is no good....


Thanks, Josh

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