Need some turn signal school

You should have 12 volts at the red wire on the signal switch when the ignition switch is in run. If not you either have a break or someone that has hacked into the wiring. There are two or three red wires at the ignition switch. Check them all for voltage when the switch is in the run position (not start) and that at least one of them has continuity to the red wire on the turn signal switch. If not then that's your problem. You really need a DVM to figure this out. Get one at Harbor Freight for $6. Digital Volt Meter best tool in my shop and I have a Fluke, High dollar ($400) I never use. Im happy to help if you can get the DVM. Forget the hand signals, do it right!
7 Function Digital Multimeter