I bought a strobe module from them before had no issues looks like i'll be ordering this too for the grom. Good price for all the stuff.I've heard mixed feedback on the 522 flashers. Here is what worked for me and everyone else that has used these...
This one is a direct plug-in and will work with any type of blinker setup (LED and NON-LED, a combo, etc). You will lose the clicker sound.
CF12ANL-01 LED Bulb Electronic Flasher | Flashers & Load Resistors | Car Bulb Installation Supplies | LED Car Bulbs | Super Bright LEDs
This one is also a direct plugin, but there is a 3rd prong that needs to be tied to a ground point. It functions the same as the first link, but has the clicker sound. We just tapped into the ground point at the back of the headlight bulb.
CF13JL-02 LED Bulb Electronic Flasher | Flashers & Load Resistors | Car Bulb Installation Supplies | LED Car Bulbs | Super Bright LEDs
seriously??? the one i posted was plug and play. no resistors needed. THAT'S the best answergromos has the best answer. the EL12 and 552 will work but you will need to add in resistors.