Since there are no Radio Shacks near me I splurged on the $10. Diode kit from Kuryakyn (Part # 4708) to isolate the L/R blinkers. After solving that, a replacement LED flasher was needed to solve hyper flash.And there's a newer type of aftermarket turn signal out that has it's own sequential flasher built in, so you might need to bypass the factory flasher completely, just jump the power wire to the wire leading to the turn signal switch, cap off the 3rd wire.
The stock flasher is located just behind the fork, on the left side (just in front of the gas tank). Simply remove the plastic panel (couple of screws) and play go fish(ing) for it. Helps to buy one with compatible plug, there are cheap Chinese ones $10 on Amazon (only 2 wires needed, not stock 3-wire). Had great luck with CustomLED (Part # ELFR-1). You can use a wire tie to zip it to the harness (or frame) before putting the cover back on.
Between the single diode kit (properly installed) and the LED flasher replacement, your problems should be solved…
(But I did duct tape a flashlight to my mast when a fried alternator took out the electrical system on my boat one night). LOL… 😝