Im installing a 79 620 harness in a 70 521.lf you asking why? I took the front clip off the 79 (ball joints, and discs)along with the 20lb.master cylinder so with electronic ignition now l figured put the harness in too. I need the wiring diagram for the 79 so i can conect the correct wires to tve 521 multi pin plug at the back of the insterment cluster.l posted the request 1 mo ago and some how someone or something delieted it . now i have enough problems with computers as it is .lije the dam photobucket bullshit . lve been a member here for well over 5 yrs and i never post anything because its a pain in the ass . maybe someone can help me with that too.