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2500HD/3500 Accessories Engine, Truck & Drivetrain Accessories

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Old 02-20-2017, 04:16 PM
mrrc4500 mrrc4500 is offline
Join Date: Feb 2017
Location: Sedro Woolley
Posts: 1
Default 2005 c4500 LED 4x6" headlight conversion

Up grading to LED 4-4x6"-old high beam is 2 prong (hi & grnd)-new led 3 prong-tried led w/hi & grnd-doesn't work. DRL &low beam works but when switch to hi beam low goes out-old seambeams worked fine. Any ideas?
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Old 02-20-2017, 04:32 PM
rapidoxidationman rapidoxidationman is online now
Join Date: Dec 2002
Location: Teton Valley, Idaho
Posts: 1,544

LED's are polarity sensitive. Hook 'em up backwards and they won't work.
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'05 Chevy K2500 ext cab long box DMax: Everything my '03 was and so much more!

There's no point being a pessimist - it wouldn't work anyway.
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Old 02-20-2017, 06:11 PM
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DmaxMaverick DmaxMaverick is offline
Join Date: Apr 2001
Location: CA
Posts: 11,882

Simply, if the connectors don't match, you have the wrong kit. They can be made to work, but you shouldn't have to do that when it should be right the first time. LED's are polarity-sensitive, as the previous reply states. A correct (or higher quality) replacement wouldn't have this issue.
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