Jump to content

79 620 wiring issues.


Recommended Posts

So I picked up a 79 620 been sitting for about 12yrs in Arizona. Had some chewed up wires from a dog getting to hanging wires. Got all that fixed or so I thought. Can't get any power to anything except power door locks and alarm. Any help or ideas of what to look for would help. Thanks

Link to post
  • Replies 6
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Soak fuse box & switches & relays (open them up) in plain old white vinegar for a few days, then clean, regrease switches where necessary, check ALL grounds etc.  Replace both turnsignal & hazard flashers with heavy duty ELECTRONIC flasher units, not the original "point style".  If 2 terminal, AutoZone "Novita" brand part #EL12 for both.  Sorry, don't have the part # if 3 terminal, but Novita does offer!  Chasing electrical gremlins sucks!! 😣

Link to post

do this first!!!!!!!!!

pull the light switch and does the headlamps come on!!!!!!!!!!!!!

NO go to fusable link wire at the starter. Is it there? then replace all the fuses. try again.

 

how about a photo of the engine bat and the wire hook ups?

 

You never told us the fix on the other truck yet? you was working on

Edited by banzai510(hainz)
Link to post

I got rid of that truck ( my chop top) I bought this 79. I put the engine tranny out if the 74 into the 79. Now dealing with electrical issues. I will post pics tomorrow Hainz. Maybe you can guide me in the right direction. Either that or I swap out wire harness from the 74. 

Link to post

I might have a 78 or 79 620 dash harness. The 74 will be not be the same since the harnesses changed through the years.

74- Points vs 78/79- Electronics.

Thinking off the top of my head, it's a 78 cause electronic box mounted inside the cab. Will check it out today. PM me if interested.  

 

 

Link to post

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.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.