with posi-taps installation was a snap. you will need the diode install for correct flashing of led's. one of our fellow members runs custom led. the kit is simple and painless.
https://www.customled.com
here is the diode kit(on sale too)
https://www.customled.com/products/2...-cut-diode-kit
i used flasher relay from superbright leds
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