Both right blinkers are not lighting. - Kingpin Victory Motorcycles

The multipurpose switch has separate circuits for the front and rear.

Check your third brake light

check the bulbs if someone install a signal eliment bulb in a dual outlet it would back feed the system

earthing problem check the earth wire on both light cluster.

yes, on multiple electrical problems like this the first thing is to check the ground circuits, in you case focus on the left rear

first repair the ground to the right rear light, as for the heater it may be a switch or a bad contact

try changing teh hazard warning light switch

Sounds like wrong bulbs in some sockets

when you use the right turn signal, does it blink faster?. Could it be the bulb holder is damaged or rusty?

It's the bulb. There are two filliments in the bulb. One is for when you turn your lights on and the other is for breaking and blinker flashing. When the break filliment goes bad it causes the blinker to flash very rapidly. 100% the bulb. Change it and all will be good again. P.S. if it were a fuse none of the break lights or blinkers would work.