1969 Patrol USA spec manual or wiring diagram. (1 Viewer)

[POTATO LAUNCHER]

Not having much luck finding a manual or wiring diagram for a customer's 69 Patrol. The fuel and temp gauges do not work. As far as I can tell they are grounded properly but am unsure as to how they should be operating. The oil pressure guage is in the same cluster and functions properly.
Any help or information is greatly appreciated.
Thanks, Casey...

 

[george_tlc]

I have a 1980 MQ manual (electronic form, paper one is back in oz). Anyhow, it also covers the 61 series (the older patrol). Clearly there may have been some changes from the older '69 model, but I don't think Nissan made too many changes to the old patrol over the decades

So, here's a snippet from my manual. It appears that the Temp and Fuel gauges 'share' a VR (I presume some kind of basic voltage regulator 'thing') and the oil gauge has its own VR (which is presumably why the Oil gauge is still working). I would guess the Temp/Fuel VR has failed or there is a wiring break.

The manuals are 100's of megabytes in size. If you need more, I can see about uploading to a site that you can access them from (google drive etc).

cheers,
george.

 

[POTATO LAUNCHER]

Thank you for the input. Makes sense now.

 

[george_tlc]

Voltage Stabilizer On Many Classic Cars - Getrid.my

Article By www.minimania.com A Little History Many British cars produced through the mid 1960s have moving-iron gauges that are fed directly from the battery through a wire that is live when the ignition is switched on. Fuel gauges of this type have two characteristics: The needle jumps off...

getrid.my

describes the bitmetalic 'voltage regulator'...

cheers,
george.