kaua'i datto Posted July 19, 2011 Report Share Posted July 19, 2011 I recently bought a 73 620 with a naps-z22 and 5speed tranny and its currently not running because part of the engine harness is fried and the rest of it looks pretty chopped and I was wondering how to put pics up on here because we all know a picture is worth a thousand words so any help is very appreciated Quote Link to comment
jefe de jefes Posted July 19, 2011 Report Share Posted July 19, 2011 Do you have photobucket? http://community.ratsun.net/topic/691-how-to-post-pictures-and-keep-online-photo-albums/ Quote Link to comment
justin 620 Posted July 19, 2011 Report Share Posted July 19, 2011 http://community.ratsun.net/topic/691-how-to-post-pictures-and-keep-online-photo-albums/ And about the wiring, check for any bare spots (obviously) and also check all connections, and grounds, simple stuff but it goes a long way! Quote Link to comment
kaua'i datto Posted July 19, 2011 Author Report Share Posted July 19, 2011 alright ill get on trying to put some pics up Quote Link to comment
kaua'i datto Posted July 19, 2011 Author Report Share Posted July 19, 2011 alright ill get on trying to put some pics up Quote Link to comment
kaua'i datto Posted July 20, 2011 Author Report Share Posted July 20, 2011 I was told that my alternator was the problem its a 90 amp from checkers and the original was a 35 Quote Link to comment
datzenmike Posted July 20, 2011 Report Share Posted July 20, 2011 Good luck with this.... Notice all the fried wiring ??? There's no telling where a wire may be 'welded' to another anywhere on the engine or dash harness. . Quote Link to comment
mike Posted July 20, 2011 Report Share Posted July 20, 2011 If it were me... Id be looking for a 73 620 harness, the harnesses had minor changes just about every year but they are enough to make swapping them from year to year a pain in the ass. You could probably fix that but youll never know where all the shorts are unless you rebuild the ENTIRE harness... It is doable but VERY labor intensive. Check under the dash to see if there are any more creative electrical fixes. Theres schematics and factory service manuals on olddatsunpickuplovers.com (check the link in the FAQ, its a sticky near the top of the page under general discussion) Also, your alternator most likely didnt cause that problem... whoever wired the alternator (and/or the fuel pump?) did. If you search here and the web there are many references on how to wire in a GM alternator. Have that alternator tested at an auto electric shop before you reinstall it. Once you get the harness straightened out Id use a relay on the electric fuel pump just for peace of mind. Quote Link to comment
pharouh Posted July 20, 2011 Report Share Posted July 20, 2011 I feel your pain,bro. I had to go through not one,but two 73 620 harnesses.Mine were bone stock too. You've got an engine swap to deal with. If you can't find a replacement (good luck),carefully unplug the harness and using your trusty fsm, go through and find all the connectors with the proper wire colors and label them. replace what needs to be replaced. Get a good VOM too. Like they said the harnesses changed over the years. Oh yeah,get under the dash too. The gremlins have probably been there too. Quote Link to comment
Rusty Biscayne Posted July 21, 2011 Report Share Posted July 21, 2011 Hey!!! I have an extra 73 harness for a 620! It's yours man! PM me and I'll get it to you ASAP. I'm in Wyoming. Quote Link to comment
kaua'i datto Posted July 21, 2011 Author Report Share Posted July 21, 2011 Thanks for all the input everybody I looked under the dash and everything looks fine I followed the fried wires and its only in the engine bay I was wondering if its possible to just replace the wires that fried and reconnect it to the plug in picture 2 Quote Link to comment
Z-train Posted July 21, 2011 Report Share Posted July 21, 2011 Electric fuel pumps belong out back near the tank. Quote Link to comment
kaua'i datto Posted July 21, 2011 Author Report Share Posted July 21, 2011 Hey!!! I have an extra 73 harness for a 620! It's yours man! PM me and I'll get it to you ASAP. I'm in Wyoming. Alright sounds good I live in hawaii how much you want with shipping? Quote Link to comment
Rusty Biscayne Posted August 2, 2011 Report Share Posted August 2, 2011 Sorry for the slow response man my harness was in my neighbors shed and he took it to the scrapyard. i hope it was worth it he also took a good 4 speed tranny i had, and a set of steelies with good snow tires on em. stupid dodge neon drivin fascist! Quote Link to comment
ggzilla Posted August 2, 2011 Report Share Posted August 2, 2011 The wires that are burnt, which parts do they go to? Yes the alternator won't cause that problem. We fit larger alternators all the time. That looks like a high-pressure EFI fuel pump, but it has a Weber carburetor? That's overkill and so it requires a pressure regulator. Not so great, but it can work. A lot of guys put electric fuel pump under the hood, it's OK. It needs its own separate wiring and fuse, don't connect it through the 620 harness. Better yet, if the stock fuel pump is still in the engine, remove the electric pump and use the stock one. Datsun fuel pump is plenty for a Weber. Quote Link to comment
kaua'i datto Posted August 5, 2011 Author Report Share Posted August 5, 2011 Thanks for all the help everyone ive decided to jus put a whole new harness in so if anyone has one for a 73 620 let me know ill buy it asap Quote Link to comment
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