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Headlights turn off after thirty minutes

Tiny
CALITOYOM
  • MEMBER
  • 2004 TOYOTA TACOMA
  • 2.7L
  • 4 CYL
  • 2WD
  • MANUAL
  • 185,000 MILES
There was previously a ignition interlocking device in the truck. Exactly after thirty minutes the headlights turn off and can be brought back on by turning them off then on again. This happens like clock work with the truck on or off. I know that there are a few crimp connections from when the interlock was removed. Thanks, I look forward to your help.
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Saturday, December 10th, 2016 AT 9:40 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,940 POSTS
Hey CALITOYOM,

This sounds like a problem with the BCM which controls the headlight relay but I would chase down where the power stops using a test light, here is a guide for you to follow along with a diagram.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run some tests and get back to us so we can continue helping you.

Best, Ken

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Monday, December 12th, 2016 AT 3:15 PM

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