To be honest, I have no idea. I googled it and got a bunch of useless trans info. There are a lot of things I still don't know what they do. I cant even find the headlight switch!! There is a switch missing, maybe that's it. There is a button by the Emergency Air gauge, I would like to know what that does... I cant get any lights on the outside to work other that Brake lights and turn signals. I would love to test the flashing school lights, but they had been painted over so I will not be surprised if they don't work..
The dash has been washed since these pics were taken lol