hey ppl, this has been covered many times already. all you do is switch the red wire and blue wire inside the housing..it takes about 1 minute 42 seconds to do. ABSOLUTLEY NO NEED to buy a wiring harness or anything...thats just absurd.
As for bulbs...the inside are H3's and the outside are H1's...
Covering price....280 shipped is rediculous...for a vendor on a group buy you should be able to do ALOT better then that. Especially when Ebay sells the same thing for 200 shipped...i bought mine for 210 shipped and they've lasted almost a year now and still going strong. So, word of advice...key to getting group buys is to offer lower price for multiple purchases.....but what do I know...I'm just a jarhead.
good luck anyway