PT Buds,

I want to add the switchback LED's to my running/turn signals but leaning towards using an LED flasher like the ones they sell on LED Lights, Bulbs & LED Lighting Accessories - SUPER BRIGHT LEDS has anyone used one of these flasher? i really dont want to tap each wire with a load resistor also, is EP29L the correct model number for use in my 2010 GMC Sierra? any recommendation on LED bulbs i want them as bright as possible. Thanks Happy New Years Ladies/Gents