I have a 1994 voyager with four wires coming out. White,Brown,Green and yellow. My trailer has two sets of two wires. green-gr/brwn and yellow-yellow/brwn for a total of 4 wires coming from the trailer. My assumption is to ground the white wire. connect the green to green and yellow to yellow. Then, take both the gr/brwn and yellow/brwn and connect them to the brown coming out of the van. I have tail/signal lights and yellow side markers. Do all of the bulbs have to be good (side markers included) for any of the other lights to work?<br />any help would be greatly appreciated!!! Thanks!!