the connector that holds the bulb is faulty or an open wire check for wires being exposed by connection. also check the fuse pannel for a blown tailight fuse or brake lights fuse.
Physically remove and check each of the fuses, use of a multimeter can sometimes be misleading. There is one fuse for each headlight and one for several of the relays -- either one might cause the issue.
you need to check to see if it is connected inside the truck there is a plug below the dash near the parking brake
Contact me directly and I'll send you a pin-out diagram and a trouble shooting guide for the turn signals. Contact me at [email protected]. Remind me of what you want and the year model of your bike.
I hve the same issue. I have replaced all the bulbs on the fron and back of the left side of the car and still the left front blinker does not blink.