Good Evening everyone, I'm new to the forum but I also had blinker issues. I bought spoiler leds with the fog light harness, upper brow and lower brow from Slingmods hooked everything up and the drivers side would blink fast. If I turned off the fog light switch the blinkers would only blink once then stop. I tore my SS apart 4 times trying different ways of connecting these leds. I noticed that when I would connect and disconnect the factory harness from the drivers side port I would have to really push the connection in to get the marker lights to work. So I removed the drivers side light and plugged it into the passenger side port and the same thing happened. So I got into my vehicle and drove to the Polaris dealer they ran a test on the drivers side light and it was defective lucky for me I'm still under warranty if not that would've been a $216 purchase. So if your having issues on one side I would have the dealer test the lights. Part is on order once I get the new light I'll do an update post.
Good to know and welcome to the forum