primeredhotrod Posted December 22, 2018 Report Share Posted December 22, 2018 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. 1 Quote Link to comment
datzenmike Posted December 22, 2018 Report Share Posted December 22, 2018 I don't often say this about the Haynes manual but the Haynes manual for the 620 has all years of wiring diagrams. The '77-'79 are near the back pages and quite detailed and direct copies of the Nissan FSMs. New are only $20? Probably less on e-Bay then you have a hard permanent copy including info on the front clip brakes, ball joint suspension and steering, EI distributor and internally regulated alternator.. You have a goat?? 1 Quote Link to comment
Nightsfire Posted December 23, 2018 Report Share Posted December 23, 2018 strange my haynes did not have wiring diagram AT all even states it does not have anything about wiring 1 Quote Link to comment
datzenmike Posted December 23, 2018 Report Share Posted December 23, 2018 Haynes 28022 (277) US... there's 10 double pages of wiring diagrams. The electrical is the only reason I have it the rest is much too compressed to cover '73-'79 so I have a '73 and a '78 FSM. 1 Quote Link to comment
banzai510(hainz) Posted January 2, 2019 Report Share Posted January 2, 2019 YOu sure you want to do this? Hate to see anther 521 go bad. most time its just a corrossion issue with these if things dont work. I say dont do it!!!! Electric ignition ? thats a no brainer now to do and use existing wires 1 Quote Link to comment
datzenmike Posted January 3, 2019 Report Share Posted January 3, 2019 11 hours ago, banzai510(hainz) said: I say dont do it!!!! Electric ignition ? thats a no brainer now to do and use existing wires Changing the ball joints and disc brakes doesn't involve any wiring. Only thing is the EI distributor. Just tie the two wires from the ignition switch together to power it. Easypeasy 1 Quote Link to comment
banzai510(hainz) Posted January 3, 2019 Report Share Posted January 3, 2019 My yellow car was a 69 then the owner swapped the harrness to a later version and dash and the gas and temp was off by 20% . Why I dont know 1 Quote Link to comment
hosestop@msn.com Posted January 3, 2019 Report Share Posted January 3, 2019 Actually installed a 79 harness in a cut up 73 truck , there was some extra BS and relays did work when done ! was a lot of work , remember looking at diagram a bunch . 1 Quote Link to comment
Charlie69 Posted January 4, 2019 Report Share Posted January 4, 2019 (edited) Here is a link to the 79 620 electrical diagram on the David Murphy 620 site. 79 620 Wiring Diagram David Murphy 620 Technical Information Edited January 4, 2019 by Charlie69 1 Quote Link to comment
hosestop@msn.com Posted January 4, 2019 Report Share Posted January 4, 2019 I may have a engine bay and cabin harness . You need Charlie ?. 1 Quote Link to comment
Charlie69 Posted January 5, 2019 Report Share Posted January 5, 2019 I do not need a 620 harness but thank you hosestop for the consideration. Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.