> I got a pair of HID for my sons 75 olds. It said that I did not have to upgrade the > wiring because the HID light actually draw less amps than a standard headlight once they > warm up in a few seconds. > > You might want to check this out. It would save a lot of work. Bob, I've thought a lot about this. After all, the Xenarcs come with 16 gauge wire running to each ballast which seems pretty light. But in contrast, each ballast is switched on with its own Bosch-style 30A relay. They are also fused at 20A each. According to the manual, nominal current draw is 3.5A each, but start up current is 15.0A. So once the lights are on and warmed up, current draw is not a problem, but my concern is at initial startup. I'm worried that switching both ballasts through one relay would be too much after several 'on' cycles. Considering that and the similar mistake that DeLorean made in the radiator fan circuit, I don't want to repeat their error with the headlights. I'm planning on wiring it pretty close to the way Sylvania suggests. Only I would rather put the relays in the relay compartment instead of in the front of the car. For now it looks like I'm going to run two new power leads (one for each ballast) up to the front of the main wiring harness. Then I'll put a plug/socket which will continue the run to each ballast. The grounds would be taken off of the common spot inside the left wheel. But before I do this, I'm going to make you some convex mirrors! I promise :-) Walt Tampa, FL