If you don't mind the lights being fixed for full brightness then you can just use a 3/4" piece of wire to jumper out across two of the terminals - You no longer have the dimness adjustment anymore but my eyes were OK with the fix... Should be the middle terminal and one of the adjoining ones - I think the one with the black and green/yellow wire (this was on my 68 Road Runner) You can always reverse the mod later if/when you replace the switch.. Insert the switch to hold the jumper wire in place.