Builds A 60 Runs through it…

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I’ll have to check. Are you thinking it’s wired backwards.

Yup. If you connect the wire to the tab instead of the top post, it'll fry the gauge, and either read all the way high, or all the way low. Happened to me when someone was helping me during the body swap on my truck and connected it incorrectly.
 
I wire well pumps single phase, three phase 240/480V and wire colors are all the same designation. Automotive sucks. I gotta remember green is not ground:doh:
 
Yup. If you connect the wire to the tab instead of the top post, it'll fry the gauge, and either read all the way high, or all the way low. Happened to me when someone was helping me during the body swap on my truck and connected it incorrectly.
Ok maybe I worded that wrong. When it first starts up it slowly climbs but does go to high. It’s doesnt jump to high immediately.
 
Ok maybe I worded that wrong. When it first starts up it slowly climbs but does go to high. It’s doesnt jump to high immediately.

Yeah. Check the wiring.
 
I ran the Jones equivalent on my FJ55 (with OM617). Don't know if it's a knockoff or licensee, but the quality was good and was under $80.

@davegonz Not to hijack but is there a thread for the OM617/H55 combo? One of the ones in your sig?

Thanks,
 
So it’s not that the 4BT has higher oil pressure? Where should the stock gauge read in the middle?

Jesus dude. The 4BT will definitely have higher cold oil pressure, but I'd expect it to fall to the middle of the range (very similar to the 2F) when up to temp. My oil pressure gauge has been working normally for the past 5 years.

Check the damn wire.
 
Also we are using the Cummins oil pressure sensor with the 60 stock gauge.

Well that’s probably not helping. Unless @GLTHFJ60 says otherwise.

EDIT - just read a few posts back where he said he runs the 60 sender. Figure out what you need to do to get put the 60 sender in the 4BT. It uses 1/8” BSP threads (Not NPT!). And although he already said it, be careful because you can fry the dash gauge if you haven’t already. It’s $75 for a new one.
 
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The tab is for a ground and the center post is for the gauge.

On the 2F sender that tab is redundant, the sender grounds by the threads into the filter housing. I guess one could run another ground from that tab to a better ground then the filter housing. Might actually get better readings.
 
Also we are using the Cummins oil pressure sensor with the 60 stock gauge.

Completely different situation, I understand now. No clue if the cummins oil pressure sensor operates close to the same range as the stock setup. Based on your wonky operation, it's not the same range.

I think I clarified this earlier, but I'm running the stock oil pressure sending unit (screwed into the cummins) with the stock oil pressure gauge. Works fine, and it reads in the middle at idle after warmed up.
 
Thanks guys... this is my first swap but I’m learning a lot. I know you both have a wealth of knowledge which I’m thankful for. Your build threads are great reading material. True mechanic craftsmen!
 
Completely different situation, I understand now. No clue if the cummins oil pressure sensor operates close to the same range as the stock setup. Based on your wonky operation, it's not the same range.

I think I clarified this earlier, but I'm running the stock oil pressure sending unit (screwed into the cummins) with the stock oil pressure gauge. Works fine, and it reads in the middle at idle after warmed up.
Johnny... wonky just made me crack up :rofl:
Thanks for the good laugh

As far as the tach wire. We need to locate that.
 
EDIT - just read a few posts back where he said he runs the 60 sender. Figure out what you need to do to get put the 60 sender in the 4BT. It uses 1/8” BSP threads (Not NPT!). And although he already said it, be careful because you can fry the dash gauge if you haven’t already. It’s $75 for a new one.

It's not clear to me which uses British and which uses NPT but in any event they sell adapters cheap enough for this exact purpose. Quick, cheap, foolproof. Just gotta buy the correct one.

https://www.amazon.com/GlowShift-Female-Sensor-Adapter-Reducer/dp/B00NWZ3TUI
 

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