Oil Gauge weirdness

[soundkat]

I am finishing the restoration on a 69 charger 500, and after getting most of it put back together and starting the newly rebuilt 440 it was showing no oil pressure:( I immediately shut it down and attached a mechanical gauge which is thankfully showing good pressure. I pulled the voltage limiter (brand new from YO and tested it with the center terminal to 12 volts, the ground to ground and with a test light was getting nothing so I pulled a donor limiter off of cluster and tested it in the same way and was getting a pulsing light so I used that one. When I was double checking the YO limiter I held the test light to the output longer and got the pulsing but it was nearly 5 seconds between thee pulses with the original 40 year old unit it was about 1 second. I pulled the cluster out and checked the gauge with a 9 volt battery and it didn't move at all so I replaced the gauge with one out of a parts cluster which did show movement. I then started the car and looked at the gauge and the oil pressure seemed to drop to zero (from where I'm not sure, it was just heading south) So I shut engine off when I turn the key to the on position the gauge slowly goes to maximum pressure?! I turned the key off to avoid frying the gauge and it goes back to zero?! Any ideas on this? I'm getting a bit frustrated and am thinking of putting velcro on the dash to be able to remove it more quickly!! JK Thanks for any and all info someone can give me!!

[Plumcrazy]

See what the gauge does with the sending unit disconnected when you turn the key on.

[y3chargerrt]

I have purchased the electronic voltage limiter from RTE. I have not yet had a chance to install it to give you some feedback. Hopefully I can get it in this weekend.

[soundkat]

I disconnected the sending unit and took an ohm meter and measured between connector and ground and it was a dead short, I got to looking at the sender and went and looked at my other chargers and they had a big cylinder not just a switch so apparently the guy who owns this car got a sending unit for a idiot light car. I got the new sender and SHAZZAM it now works, thanks for all your help!! Peace

[y3chargerrt]

Nice fleet!!

[jdiesel33]

Is that Heaven?