This GoWesty Vehicle Speed Sensor (VSS) is designed specifically for the Vanagon application. The GoWesty VSS is a hall effect sensor, which produces a square wave signal. This VSS can be used with any application requiring a square wave VSS signal. The GoWesty VSS mounts to the back of the speedometer where VW fitted the NLA (no longer available) stock speed sensor on factory cruise control-equipped Vanagons. It can be used as a replacement for the stock speed sensor and simple instructions for this application are included. *This VSS is intended to work with '84-91 speedometer housings that have a plastic snout for a snap-on speedometer cable. It will not work with speedometers that have a screw-on speedometer cable or a metal snout for a snap-on cable. If you check the cable attachment to your speedometer and find that you don't have a plastic snout for a snap-on cable, you will need to purchase one of our late '84-91 speedometers, sold separately. The GoWesty VSS was designed in-house and is proudly manufactured in the USA. Engine Conversion Note NOTE: Installing this VSS in a vehicle with an engine conversion (Subaru, Bostig, etc.) is a custom install. Because the VSS may need to be modified to work with certain engine conversion setups, this product is not covered under warranty when paired with an engine conversion. Each VSS is tested to make sure it is operating properly before shipping out to you. PDF Instructions Vehicle Speed Sensor Installation Instructions Troubleshooting We often get questions about how to test the output of this sensor to diagnose tricky cruise control problems. To test the sensor's output, make sure that the red wire has voltage (key on) and the black wire is grounded. Use a multimeter to measure the voltage between the grey wire and the red wire. Remove the speedometer cable, and slowly turn the cable port on the back of the speedometer. You should see the voltage of the grey wire fall, then rise back to zero relative to the red wire as the speedometer spins. VSS Flowchart
