Head Rest Monitors??

Hi i was searchin ebay and i came across this guys auction. he appears to have good rating nad i was wondering if i bought these 2 head rest monitors woudl i be able to install them myself. liek cane someone tell me the things that musrt be done to totally install these head rest monitors step by step. thanx peace http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2473814941&category=38650