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11-02-2013, 12:45 AM
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Hummer Expert
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Join Date: Sep 2011
Location: Surprise, AZ
Posts: 717
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Re: DRL not working / All fuses, relays and bulbs good
Oh **** I hope that's not what happens when you install it backyards!!
Hope you guys get this worked out. Keep us updated!
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11-02-2013, 04:22 AM
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Hummer Novice
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Join Date: Jan 2012
Location: PA
Posts: 7
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Re: DRL not working / All fuses, relays and bulbs good
Im sure installing it backwards could probably fry something but I am positive that is not the case. I do however think that the Anti flicker capacitor that is installed in the HID system could be the reason that the DRL's are not working. I have emailed the company and hope to hear back from them soon.
Spending over 90 hours a week working on private jets is all fun and games but do I really want to go home and spend more time troublshooting an electrical problem when I could come here and possibly get lucky and find the answer to my problem.
(As he says in a sarcastic tone and quoting a line from THE MASK)
I'd like to think so, Haa Haa
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11-02-2013, 04:34 AM
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Hummer Novice
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Join Date: Jan 2012
Location: PA
Posts: 7
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Re: DRL not working / All fuses, relays and bulbs good
And yes, I will keep you posted.
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04-05-2014, 09:13 PM
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Hummer Novice
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Join Date: Jan 2012
Location: PA
Posts: 7
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Re: DRL not working / All fuses, relays and bulbs good
So I took it to the dealer and they were not able to find the problem and they used to be a hummer dealer, WTF. They tested the BCM and it was fine. So Last night I put everything back to OEM because I had a bad ballast for one of the HID's and the DRL's still do not come on. Im at the point now that if when I check the relay and fuse tonight, if they are good, then I am wiring it straight in with the headlights. Stick a fork in it, I'm tired of jacking with it.
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04-05-2014, 11:08 PM
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Hummer Expert
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Join Date: Sep 2011
Location: Surprise, AZ
Posts: 717
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Re: DRL not working / All fuses, relays and bulbs good
You even removed the DRL mod diode and they still didn't work?
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04-06-2014, 07:31 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: DRL not working / All fuses, relays and bulbs good
Does the DRL relay turn on? Check for power at pin 86 of drl relay when in drive, engine running(with help of a second person) don't want it to drive away on you. Check for ground signal at pin 85 from BCM. Check for power at pin 30. If you have all those problem is from pin 87 to lamps or bad ground tp DRL lamps. I would suspect open in underhood fuse block from pin 87 to connector c4 pin b2 dark blue wire due to modification done over loading circuit.
__________________
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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04-10-2014, 05:47 AM
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Hummer Novice
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Join Date: Jan 2012
Location: PA
Posts: 7
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Re: DRL not working / All fuses, relays and bulbs good
yes, I removed the Diode and still no lights. I will try your suggestion for checking ground and power. Stay tuned.
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