First of all want to thanks Autofy for great service and product. Ordered this Flasher on 12 July and got it delivered on 14 July. But don't know why, the flasher didn't work or it was defected. Then I just asked for exhange of the Flasher on 14 July and got the new Flasher on 16 July.
Delivery guy came and took my defective Flasher and gave me new Flasher.
Now, it is working. And Installation is quite simple.