I just bought a 91 4runner and the O/D doesnt work. We think it is due to a speed sensor in the rear axle that has been cut. Does anyone know where these two wires run to?
Many navigation systems no longer use this connection, relying exclusively on the information received from GPS satellites to track your vehicle. That means you might be able to skip this step. But for those navigation systems that do require this information from your vehicle, you'll have to find and make a connection to your car's speed sensor wire.