Re: OMC trolling motors
Your TM is a 96' version. The "24C" stamped on the skeg identifies the motor for parts like orings, end head set screw, etc. Most parts are still available for the TM so if you need parts, be sure to remember the 24C stamped in the skeg.
Mine is a 94' and very similar. Mine is a "Silent Start" which means it has a choke coil instead of a resistor coil for speed variations. The choke coil lets the motor wind up more slowly than with a resistor coil.
Look at the skeg. If is is swept back, it's a standard thrust motor. If the back of the skeg curves a little forward, it's a high thrust model.
Thrust wise, I think yours is probably above 48lb at least...likely around 52lb......don't have the book here at home to tell me.
EDIT: Which switch you looking for....."ON/OFF" swtich or the Speed Switch....the one that you dial the speed in with.
EDIT(again): You might want to check with a local dealership....on the price of the switches. I took a look at the site Rick posted and the price for the "ON/OFF" switch is about $10 cheaper from BRP.