This sucks I noticed that one of my lights wasn't working and after troubleshooting I found out that my ballast/igniter(mcculloch)stopped working.I was wondering if puting an off-brand(not mcculloch)bulbs shortened the life of my ballast/igniter. I ended up putting my mtecs back on and I was really suprised that ONE hid lit the road up better than 2 mtecs!!!!!! I have to wait and see if they will warranty my ballast/igniter or else I'm going to have to buy another.