its a mariner 60 two stroke,02 .
Assuming it's based on the Yam, when the engine is up, try the inside of your Port Clamp bracket. right at the top. You may see a cable coming out through a hole to the outside of the clamp & up to the Engine tray. You're looking for a plastic thing with a small lever held on with 2 screws. If it's siezed, plastic thing with half a lever.......
Option 2 is follow the wires up from the PT motor. There's a high chance they will join the sender connections for the rest of the trip to the remotes plug.