This weekend I removed the original Patrol water temp sender, and the oil pressure sender off of my red Patrol to use on the green 66....
The water sender measures exactly 50 ohms cold, same as the gauge, so I am assuming that as the temp increases, the resistance in the sender decreases, which increases the voltage at the gauge, which excites the coil in the gauge and makes the needle move up the scale.
The oil pressure gauge would not give me a solid resistance reading, so I am unsure about whether or not it is good, although I do remember that it made the oil gauge move on the red Patrol.... I guess we'll find out. The green Patrol was totally missing the oil sender wire under the hood- I cut open all the looms and could not find it, so I ran a new one out of some yellow 16 gauge wire
I also started messing around with how I was going to insulate this factory 4wd indicator light to use it as the alternator charge light, but I am concerned about finding a rugged, permanent solution that would keep this lamp from grounding out against the dash, so I ran down to the auto parts store and I found this cool red indicator light from Dorman for 8 bucks:
http://www.summitracing.com/parts/rnb-8 ... SH9Pbw_wcB
I think it looks pretty similar in shape and size to the original indicator lights; and since it is in a non-grounded housing, it will work perfect for an alternator lamp.
So with that, I will use the green factory Patrol indicator for the turn signals, and the red one for the high beams.
Speaking of turn signals and high beams - that's what I spent the rest of the weekend doing- chasing down corroded connections with the multi-meter and cleaning them up, and finding and re-doing millions of past "twist it and tape it" style wiring "repairs", and also cleaning up the contacts on the switches...
By this evening when I was done, I had parking lights:
and I had headlights (both low and high beams)
and I even had tail lights and turn signals:
This was a pretty major accomplishment - when I got this Patrol last year, none of the lighting on it worked at all; and I was able to get things working using most of the original wiring harnesses and switches. I ran through 3 rolls of electrical tape re-wrapping everything after cleaning it all up.
I also removed and cleaned the speedo cable and the speedo sender, and I put my cleaned up speedometer back together and got it ready to re-install.
I am really close to getting the dash panel all reassembled.



L-R:
White 65 Hardtop L60-3-00617 (undergoing restoration)
Red 65 hardtop 4L60-002565 (scrapped for parts)
66 Hardtop "El-Bondo Patrol", L60-00511 (Restored, then sold June2020)
Blue 67 Hardtop (sold March1997)
Green 62 Softtop L60-2-00504 (undergoing restoration)