Next we will need two electrical wires. Any length will do but should be somewhat short enough to be easily managed without becoming tangled etc.

Bend the contact that was previously repsonsible for closing the on/off circuit straight up. This is thin metal so it'll bend easy and will also fatigue easy, bend only one time.

Remove the insulation from both ends of the two wires. on one end remove about 3/8 of an inch and the other end about one inch. No exact science just make sure that the exposed wires are long enough.