Installing HID need some tips

still haven't received it. Its 55w bi xenon h4 with relay harness.
I know i have to grind one bulb base to fit into the left h7 side other than that I'm not sure if this will be "plug and play"? My only concern is the wiring so i have both low and high at the same time.

ebay link
http://www.ebay.com/itm/55W-HID-BI-...Parts_Accessories&hash=item2a139886d6&vxp=mtr

loads and loads of info on here already especially about wiring etc - hit the search function, that should be a big help

That kind of setup is simple. It's all color coded and idiot proofed. The octopus harness hits the battery, your old light plug for logic, ground, the lights for switching, and the two ballasts. The ballasts plug into the lights.

cool sounds like it will be plug and play then