reverse lights do not come on

I have a 1988 EFI Toyota 4 wheel drive and when I put it in reverse, the lights do not come on, however, my brake and running lights are working just fine. I need to get the truck registered, but it won't pass without reverse lights. How can I fix it with. I need to get this truck inspected and registered really soon, and I don't want to have to pay $76 an hour for them to go through the wiring. I an a poor student and don't have the money for that. All the other lights but the reverse lights work.