I installed a new wiring harness, and now every time the low beams come on I get a bulb out warning on the dash with the annoying beep. It's only lows, not high beams. Happens when the lights are turned on, and when coming down from having high beams on.

I am wondering how the car decided when a light is out. Is there a loop that needs to be closed? Does it measure current being drawn? When I installed the harness I put new plugs with higher gauge wires in place, and used one of the stock plugs as a trigger for the new ones, but the other (passenger) stock light plug is left dangling not plugged in. I'd like to solve this without resorting to plugging another bulb into the plug and wasting the wattage just having it dangle. Please any suggestions, I'm getting tired of the warning on the dash.

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So your previous thread was about adding front fog lights by hacking into the rear fog light switch wiring.

Did that cause your problem?

Or did you also play with the headlights wiring?

The bulb out warning gets generated as a result of the system sensing a difference in resistance on the wiring. As Orfs notes, you can bend over the leg on the relay. You also can remove the relay altogether and jumper the two sets of corresponding slots in the relay mounting with spade connectors on the ends of short bits of 14 gauge wire.

The relay (I think in panel below your steering wheel) is marked 281 or 443 919 469B

From Audifans files:

6. Take four spade connectors(blue ones if insulated at the hardware store) and six inches of 14 ga. wiring, cut to make two 3" pcs. and crimp corresponding spade connectors . Can't get the diagram to come out, but what you want to do is connect socket 56bL1 to socket 56bL and 56bR to 56bR1.