Quote:
Originally Posted by jrsavoie
How does your harness deal with daytime running lights?
The LMC harness says not to use with DRL's
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His, as well as LMC's (and just about anyone else's) use a relay to draw power from the battery to feed to your lights, as opposed to your light switch. Your light switch will now just act as the trigger for the relay.
That said, DRLs are simply a low power feed to either your low beams or your high beams (depending on vehicle), when your light switch is turned off. When you install and HD harness on a vehicle with DRLs, the low power feed is now being pulled from the battery, becoming a full power feed which in turn makes for full brightness DRLs.
Because the HD harnesses don't vary much in how they operate, and are pretty universal to all vehicles, they state not to use it with DRLs because those vehicles who use the high beams on lower power for the DRLs, will now be shining high beams on high power at all times...
This is my understanding of how it works, anyways.