i need help with wirin 72 gmc

[pete29]

i putting a new 21 circuit harness on my 72 gmc. A lot of the wires are diiferent. One of the wires that comes out of the fuse box says ignition coil. I don't think it goes to the coil because a wire that reads pos coil comes out the other end of the fuse. I tried hooking the one that says ignition coil up to the key swithch but all of those wires have to much juice and blow the 30 amp fuse. PLEASE HELP!!!!