Resistor for the lowest speed of your radiator fan on 86-92 Vanagons. If your low speed fan doesn't work this is probably why. Large green resistor located behind DS headlight. UPDATE: The only version of this resistor that is available right now has to be modified to work on your Vanagon. It is basically just cutting and splicing some wires and I show you how to do it in this video. Please watch the video first to be sure you are up to doing this before you place your order:
