Oil pressure gauge not working

[Toytruk]

Ok so I swapped the 1jz into my Toyota pickup truck and can't get the oem stock cluster oil pressure needle gauge to work on the truck... If I use the 1jz oil pressure sender on the block the needle just jumps all the way up and then returns all the way down, I'm assuming because the sender for the 1j is for a light on the dash not a gauge... So when I replace the 1j sender for the sender for the truck, needed a little coupling 1" long and bpt to npt fitting in one to screw into the block, the needle dose t move at all... Anyone with some insight?
I even replaced the truck oil pressure sender with a new unit and still nothing... I would really like to ge my stock cluster in fully functional order... Thanks!

 

[IJ.]

Probably fried the gauge with the Jz sender....

 

[Toytruk]

Ah it still seems to work, like it still moves when grounded or udon the Jz sender...

 

[IJ.]

Don't know about the Truck gauge but it's fairly common for the USDM Mk3 gauge to fail if connected to a JDM sender.

 

[jmcboost]

This probably isnt the case, but just to throw something out there....on the MK3 supra when you take out the stock ecu, some of the gauges in the dash aren't grounded anymore. Is there any way that you may need to run a new ground wire to get the factory gauge grounded?

 

[Toytruk]

Hmm possibly I will check the ground and the pinout of the stock ecu...