Datsun 620 Resources Wiring and Manuals

[Moist Lightning]

Since the old site hosting service manuals, wiring diagrams etc is gone and I figured I'm one of the few with most of the docs, I decided to start a new one. Will be adding more info over time. Always open to guest contribution too if you have something to add.

The site is datsuntrucks.com or see below for direct links to documents/pdfs.

 

Wiring Diagrams

·    1973 620 AUTO

·    1973 620 MANUAL

·    1974 620 AUTO

·    1974 620 MANUAL

·    1975 620

·    1976 620

·    1977 620

·    1978 620

·    1979 620

 

Manuals

1974 620 SERVICE MANUAL

1977 620 SERVICE MANUAL

1978 620 SERVICE MANUAL

 

Other

620 PART NUMBERS

EMISSIONS CONTROL

L16 / L18 / L20B SPECS

J13 / J15 / J16

 PAINT CODES

[datzenmike]

Pined.

[Lovexplosions]

 

Thanks for this! I was just looking for this today, I should have started here...clearly

[SONOFK-E]

Sux that you haadtodoa new one great information keep up the good work.

[ECS620]

Awesome! Cant thank you enough. Wish I would have seen this about 3 days ago before I ordered that Haynes manual!

[Draker]

Nice site! Thanks

[shoprag]

Downloaded the service manual, cant thank you enough for this info !👍

[Goemon]

I need to know what gauge wire is on the side marker lights & tail lights 
on a 620.......I have looked & looked on this site for an answer but have
not found the size wire I need to rewire my 620 tail, marker & blinker lights .
I just need a bit of help. I have 4 rear 620 light buckets to restore
Thank'y Yalls.
 

 

[datzenmike]

Probably 16 or 18ga. Run 14 to be safe.

 

Bulbs are 23watt and there are two. I upped to 25 watts and 14 volts when engine running so 1.785 amps X 2 = 3.57 amps 

 

14 gauge 7-24 strands copper wire will handle 10 amps (20 gauge will handle 3.5 amps) so you're good.

[Goemon]

Thanks
The only upgrade I will be doing is maybe a 50-70 amp alternator.
keeping her as OEM as possible

[Goemon]

I guess I need to know OEM size since 
I have to put new wire & pins in the connectors to
rewire the rear cans

[datzenmike]

7 minutes ago, Goemon said:

Thanks
The only upgrade I will be doing is maybe a 50-70 amp alternator.
keeping her as OEM as possible

 

I put a 100 amp Altima alternator in my 710. The power wire from the alternator was thicker than the original battery cables!!!!! Just saying to run a thicker wire. I soldered a large lug on the end and bolted it to the positive cable at the starter. The front one is the battery cable.

 

[Goemon]

I am not planning on running a big audio amp.
I am deaf enough at 59.
There is also a need to keep the wire the same for resistance purposes.
I just want more than a 35 amp ALT.
If I was out west, I would just put a solar panel on top.
Sunfoil project: You Tube

[datzenmike]

There's no advantage to resistance. Less is more available power for the lights.

[Soundline]

2 hours ago, Goemon said:

I am not planning on running a big audio amp.
I am deaf enough at 59.
There is also a need to keep the wire the same for resistance purposes.
I just want more than a 35 amp ALT.
If I was out west, I would just put a solar panel on top.
Sunfoil project: You Tube

Liiiiiiiiike GA is a shady s-hole.  
 

I really enjoyed my time there. 
 

Resistance is great, but gauging up the wires reduces heat. Best to let the load draw what it needs efficiently.  

[Lovexplosions]

I'm sure I'm not the first to find this but I am absolutely in love with this site...and it belongs here.

 

https://www.carpartsmanual.com/datsun/pickup-1972-1979

 

[Lemansdatsunjim]

THANK YOU SO MUCH!!

 

OK