[chopper1963]

I bought 70 chevelle with an MSD ign. module andMSD coil . Wires under hood were cut . I reconnected as per MSD manual,now I have no spark .I may have hooked some wires up wrong...Ijust got my hands on the manual. Ihooked the MSD parts up correctly.There is a green wire that comes from the dash that I do not know where to connect.The car turns over but still no spark. If anyone knows the color scheme of a 1970 chevelle ignition system PLEASE HELP!

 

[John_Muha]

If it's a dark green wire it might be the temp sender lead or part of the A/C circuit if you have that. Have you measured to see if the MSD box has 12 volts from both the battery and the ignition switch going to it?