Remove the taillight assemblies.
Unplug the wire connector going to them and inspect both the connector and the tail light where the connector plugs in.
These ventures have, what the manufacturers call "circuit boards" that the bulb plugs in to.
The circuit boards often burn out at the connector and then you have no lights or lights on at all times or some other crazy problem (I have a Venture and have experienced this twice).
If the connectors are burned, replace the circuit boards and buy a wiring harness (pigtail) for the tail lights. You may find then at most auto parts stores, but even the dealer price isn't too bad. Rewire the tail light and then you're good (for a while).
Monday, July 21st, 2014 AT 6:33 PM