[TimBSmith]

Good evening.

I installed a new oil pressure sender same model as the one I replaced.

The oil pressure gauge pegs when I attach the sender wire to the new sender post.

Tested the new sender.

Measured resistance after 30 minute warm-up from sender post to ground wire from battery.
62.5 ohms

Measured resistance after shutdown. 280 ohms then 310 ohms after 30 minutes cool down.

Next I will attach sender directly to gauge.

Currently sender post wire travels from sender, to a grounding junction, then from junction wire to gauge.

Also, in case this is the wrong sender. Anyone know if the stock 80 psi 240/33 sender on a 70's era Pearson 30 is available?

Successful replacement options without replacing both sender and gauge on a stock Pearson 30?

Welcome thoughts.

Fair winds.