I recently put in headlight relays. They control Hella h4's. I too chose the driver's side for convenience and feed from battery side via #8 wire. I show 12.3 volts both at the battery side and also at the end of the #12 wire feed on the driver's side to feed the relay's #30 pins. My low beams are too dim. The high beams are fine. When I disconnect the driver's side low beam the right side low beam comes to life at normal brightness. Reconnect and both are back to too dim condition. I have tried everything I can think of to remedy this. All work fine as expected, just low beams are too dim. Does anyone have an idea of what my problem is. I am not opposed whatsover to reconfiguring these relays to the battery side of the car but from what I understand the benefit of that would be to prevent voltage drop to the driver's side because of a long feed wire to the relays on that side. It doesn't appear from my readings that that is my problem. Beside, I have to wonder why the highs work fine but the lows are too low. I thought maybe the stock factory wire running across between the two lights controlling the low beams might be old and beat up, but I jumped in a replacement wire and to no avail the same thing. Any ideas?