100k ohms between shaft & hull/engine block with couplers separated. 600ohms between rudder shaft & hull. boat is out of the water & dry except for 'bout 1/2" rainwater. New shaft & cutlass bearing, old rudder shaft bearings. New strip zincs on rudder were really eaten up after about one month in the water & the shaft zinc also looked a bit tired.... Gonna try to pull the steering cable & check again with the meter.

Could there be enough garbage in the tunnel to get continuity?

Jim

Also make sure you keep your fingers off the end of the of meter leads. If you touch the metal ends you will be measuring the resistance of your body. ( finger to finger ) Zero your ohmmeter and have it on a high scale. You should get a reading in the Mega Ohm range. If not, start looking.-- Ed

It's not a diode---you have a voltage accross the points you are measuring. .
Not good. Reads like that because the ohm meter is really a current (or amp meter ) reading the current from the little 9 volt battery in the meter. That's why you have to zero it. The scale is just labeled backwards ( or inversly ) because the more resistance you have the less current flows.
Now have a beer,unhook the battery and check everything. Then go through the wiring and rip out all the crap that previous owners have put in and do it right. You'll be glad you did and things will work and be safe. You do enjoy doing this with all your free time and money don't you? Now you don't have any time or money for the bars, but you might have to go to church to pray for patience or to ask forgiveness for all the swearing it took to fix the boat.Been there, done that. Still doing that. Never done, always something to do on the boat.--Ed

Another subject,is there a good reference place to interchange parts from one M to another with regards to shafts,rudders, and props.
Such as 28' shafts and rudders to a 32'(twins)
could not find at Marinette.com
Anthony






"figure it out"