Volvo Repair: 1980 volvo 244DL 4dr, volvo 244dl, ebay

Question
I'm helping a friend try to get this car running,and cutting to where I am currently at in a long story, he replaced the coil, and can't remember what wire went to what connection. There is 1 blue wire, 3 brown, 1 white & 1 white/red. 1 brown wire comes out of the harness on the firewall and the other 2 go into the harness along the wheel well. which wires connect to the ballast and which to the coil and what is positive and what is negative. Also if you know where I can get a detailed wiring diagram that would be SOOOO helpful. Thank You for any help you can give.

Answer
Aerich, There is a CD available on EBay that has the wiring diagram for this car.  I have it, its pretty good.  Two brown single wires go on the ballast with 2 plugs and the blue goes on the single plug of the ballast. the white red go on the coil.  White/red should be negative and the other brown wire goes on the positive.  Use a test light to check for power.  Roger