Check ur balast resistor on the coil located next to the batery if this is bad it can cause either no electricity or too much electricity going through ur vehicle could blow fuses all the time or not give any power to them if u have a ohm meter. Disconnect wires going to balast and read across terminals if it reads more the 1.7 ohms the replace it u should not see k ohms or M ohms just 1.7 or lower. Hope this helps