1996 Volkswagen Jetta Distributor Cap Wiring Order

Hi, i have a 1996 Jetta TREK, a friend of my brothers replaced the distributor cap and messed up the wiring on the cap. I was wondering if anyone can tell me how the wires are suppose to be on the cap so it runs right. it starts but backfires and i have to turn the distributor to start it up and it wont bolt down. So i know its the wires on the cap itself i just need help in which order their suppose to be. Thanks Alot!