Very basic. Get a voltmeter, check for voltage at the bulb socket. If no voltage, check for voltage in the wire leading into the assembly. Ditto for ground. I bet it's a bad ground though. | Dan | -- Dan Simoes dans@ans.net ANS http://coimbra.ans.net/dans.html 100 Clearbrook Road (914) 789-5378 (voice) Elmsford, NY 10523 (914) 789-5310 (fax)