How to wire up a toggle on off on switch to use as my turn signals

Replace the multifunction switch! It will be much easier and much better. There's more involved with the turn signal switch than just the turn signals. The brake lights, parking lights, taillights, cruise control, and the windshield wipers are all part of the circuit for the multifunction switch! If you don't want to get a new one, get a used one from the local junkyard. Hope that helps! Jim