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-   -   New vintage usa highbeam/engine light prblem (https://67-72chevytrucks.com/vboard/showthread.php?t=789899)

70CHEVYBB 07-08-2019 05:39 PM

New vintage usa highbeam/engine light prblem
 
Just in stalled a NVU performance black gauge kit. two problems 1) hight beam light stays on when lights are turned on, it does get btighter when the high beams are turned on. 2) check engine light stays on all the time. i have checked for codes and all are cleared. this is a 5.3 with psi harness and computer. i also installed a new AAW harness for the truck. the brown engine light wire from the pcm goes to the the black wire on the light and the red wire goes to power. the high beam light black wire goes to ground and the red wire is hooked to the hi beam wire in the AAW harness. i called NVU and have no fix for the high beam light problem and said I need to use a relay on the check engine light . Any thought on this???

Andy4639 07-09-2019 06:36 PM

Re: New vintage usa highbeam/engine light prblem
 
I'm not 100% sure but the wire coming from the PCM should be a ground wire.

The high beam wire on the dimmer should go as you stated. I would check your dash and make sure it's grounded good. On factory dashes anytime the turn signals are high beam lights stay on it's a dash ground problem.
:chevy:

70CHEVYBB 07-09-2019 06:51 PM

Re: New vintage usa highbeam/engine light prblem
 
yes the pcm wire is ground. i ran it to the black wire to the light and the red wire to ignition. as soon as i turn the key on the light come on

Andy4639 07-13-2019 10:23 PM

Re: New vintage usa highbeam/engine light prblem
 
Quote:

Originally Posted by 70CHEVYBB (Post 8555790)
yes the pcm wire is ground. i ran it to the black wire to the light and the red wire to ignition. as soon as i turn the key on the light come on

That's correct the hot wire is hot when key is on because of the ground wire.:lol:

Your gonna have to figure out the ECU wiring for the check engine light to trigger it and tie into it, not straight to a hot wire.


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