Port temp sender test on J90plsct

[Dopolo31]

I have been having issues starting my 2003 90 hp johnson for some time and have been going through some trouble shooting.
I have pulled the Port temp sender (Smartstart temp sender) to test.
Im pretty sure there should be a resistance across the sender. Im getting open circiut on any ohm setting.
Am I testing right? Should i be testing from brown wire to white?
If this sender is faulty would this be causing the issues Im having. ie what does this sender make the outboard behave?

 

[boobie]

There should be no continuity between any wires and ground when the sender is cold. The white/black wire is for Quick start and the brown wire is for over heat. They only come into action when the motor is running. You have other problems.with the starting.