Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

Lighting problem

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Old Jul 18, 2022 | 11:28 PM
  #1  
Justme022786's Avatar
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Default Lighting problem

Hey guys was hoping someone would know the answer to this. I just put the 7inch led lights on my H3 and somehow my high beams turn on low beams and low beams turn on high beams what did I do wrong?
 
Old Jul 19, 2022 | 09:21 AM
  #2  
Doc Olds's Avatar
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From: Boat Town USA MI
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Welcome to HF.

Made your connections backwards?
 
Old Jul 19, 2022 | 09:29 AM
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TAINTER's Avatar
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From: SE Michigan
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Originally Posted by Justme022786
Hey guys ... what did I do wrong?
Uhhhh, Ummmmm, DUH! Sounds like you wired the lights incorrectly.
 
Old Jul 19, 2022 | 09:41 AM
  #4  
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From: New Mexico
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Did you use an adapter harness to switch the high/low polarity? Most LEDs use a common ground and switch the positive side input to go between high and low beam. The H3 wiring does the opposite and switches the ground side. An adapter harness with a relay is required to swap the polarity. They can be picked up in Amazon for not too much.

Detailed video here about converting to LEDSs

https://m.youtube.com/watch?v=SKi2cz2h6lE
 

Last edited by NMH3; Jul 19, 2022 at 09:45 AM.
Old Jul 19, 2022 | 10:04 AM
  #5  
Justme022786's Avatar
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Originally Posted by TAINTER
Uhhhh, Ummmmm, DUH! Sounds like you wired the lights incorrectly.
The wiring harness only goes on one way.
 
Old Jul 19, 2022 | 06:18 PM
  #6  
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Originally Posted by Justme022786
The wiring harness only goes on one way.
Post pics of the connector contacts/wires. It appears China reversed wires to the connector. Seen it many times over the years.
 
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