service engine light after changing headlight assembly

Salvaing

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Interested if you find out where this $%@#& aftermarket wiring harness is not correctly wired ;)

Maybe the easier way is to compare aftermaket harness with genuine one wire by wire ...
Unfortunately I sold the original headlight housing.
 

Salvaing

Full Member
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I'm not sure the aftermarket headlight circuit is different than original.
I wonder if this is not a problem of wires and connectors quality of this "made in China" product.
I read (I dont remember where) that the wiring impedance is very sensitive for DRL management.
Going back to original headlights doesnt fix it ?
______________________________
 

Salvaing

Full Member
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Buick Ownership
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I bought an used Buick Rendezvous Headlight Bulb Wiring Harness OEM (both L&R) on Ebay.
I will swap with aftermarket wiring harness this week-end.
Wait and see ...
 
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Buick Ownership
Buick
Hi guys.
I swapped the $%*@&£µ aftermarket chinese headlight bulb wiring harness with the used OEM wiring bought on Ebay ... and IT WORKS !!! :headbang:
DRL management came back (Hi beam at reduced voltage) with a regular Low / Hi beam (y)
No error code.

Beware : left wiring is different than right !

Before : all light always ON

20181209_135052.jpg

After : only DRL (Hi beam at reduced voltage)

20181209_135121.jpg
 
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