Just to clarify- there is not a fuse specific to the gauge, but one for all gauges in the cluster.
Here is a photo of the sender unit which I 'customized' with red paint on the no no spade and gorilla taped the flange for the rubber cover to fit...
The wire was my next through as well - that's why I did the continuity test.
Is there by any chance a fuse that controls that specific gauge?
Otherwise, I think I will try to find a replacement gauge (this seems so unlikely...)
Thanks all for continuing to solve with me.
I tried the grounding trick and the gauge did not move.
I also checked with the ignition off:
-resistance of yellow/black to ground: 53 Omhs. Did not fluctuate much with wire moving.
- resistance of...
Here are the stages of what has happened:
1. Gauge used work well.
2. Had a well known cruiser shop do the oil pan gasket
3. Some time later gauge starts reading much lower
4. Changed oil back to my preference.
5. Drive with gauge still...
Thanks for sharing. I read the whole thread and reconnected the yellow/black wire with a new spade to the center of the sending unit.
There is no response by the gauge as were yesterday it just read low and then stopped working.
I tested oil...
I am trying to understand how the oil pressure sender wiring works on my 87 FJ60.
I pulled off the rubber boot (which has a hole on the side).
Into the boot ran a yellow/black wire which is encased in a plastic ribbed conduit.