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If you unplug headlight sockets, Only 1 wire should be hot, White/Blue for Left and White/Red for Right.
The other 2 wires are connected to the dimmer switch and when in operations, they are grounded to complete the circuit. If the headllights are not working with power available to the bulb, the switch should be faulty unless the connection is broken between headlight and switch.
At switch test for power supply to Red and Red/White, if power is available, there is no problem with the wire connections.
Saturday, September 27th, 2008 AT 8:38 AM