I am in the process of replacing an engine on a friends pontoon. The pontoon now has an Evinrude 50hp and he bought a Johnson 115hp to replace it with. Both of these engines have the large red plug wiring harness. The difference, though is that the 50hp has the push-to-choke on the key, where as the 115hp has the choke on the toggle switch below the key. Can I replace the switch and toggle choke with a new switch with push-to-choke? I would just use the same harness, but the Evinrude has a console mounted throttle with the ignition in the dash. The Johnson has a control box that will mount to the rail, which is what he wants it changed to. Would I be able to just swap out the ignition switches between the two and wire the choke to the new switch, or is it more complicated than that?
