Was on eBay and came across this harness.

http://cgi.ebay.com/ebaymotors/1998-2005-2006-Honda-Civic-07-Accord-Add-Amp-Adapter_W0QQcmdZViewItemQQ_trksidZp1638Q2em118Q2el 1247QQcategoryZ6763QQihZ004QQitemZ140227968998QQrd Z1QQsspagenameZWD1V

Anyone familiar with these and have good results using a stock HU?

invest in the JL CleanSweep!... or rockford's 3sixty.(needs a pda to program)

although more expensive, the alpine vehicle hub gives a lot more options for expansion (hd radio, video sources, etc). But if you're looking for just a cheap way to grab some pre-outs, the PAC unit on ebay works well enough.