[joeval]

The wires are color coded. The brown is the parking brakes and should match the brown wire from your van (the ones leading to the rear lights). Yellow and green should connect to left blinker and right blinker (should say on the wire). If you have a volt-meter or test light, turn on your blinker and check which wire is powering on and off. Do the same for the other turn signal. The white wire should ground to the van. You could probably connect from where your jack is. If not possible just connect from underneath the van where you can see the wires going to the lights.