Dandy. I think this is going to be an easy diagnosis. There's a joint connector where the front and rear circuits split off. We know it's okay up to there since the front lights work. A white / red wire goes to all of the rear tail lights, and those and the license lamps all share a common ground wire. Chances are the ground wire is corroded off or got hit by something. It's bolted to the sheet metal at the center, front of the trunk. Check that wire first.
If the ground wire appears to be okay, turn on just the running lights, then use your voltmeter or test light to check for voltage on every terminal on one of the tail light bulbs. There must be at least one with 0.0 volts. If every terminal has some voltage, there's a break in the ground wire. If none of them have 12 volts, there's a break in the white / red wire.
Thursday, January 29th, 2015 AT 9:42 AM