HONDA 2004 TRX400EX SPORTRAX400EX OWNER'S MANUAL Pdf View and Download Honda 2004 TRX400EX Sportrax400EX owner's manual online. 2004 TRX400EX Sportrax400EX Offroad Vehicle pdf manual download. Honda TRX400 (TRX-400) Won't Start - YouTube Click to view on Bing3:24Honda TRX400 won’t start refers to when the all-terrine vehicle will not activate and begin to work. This video is going to show you how to troubleshoot a Honda TRX400 that will not start up.Author: Quick AnswersViews: 24K 400ex « Wire Wiring Harness We are proud to serve all customers who are interested and enthusiastic in regards to power-sports and we appreciate your business. The item “1999-2004 Genuine Honda Wiring Harness Assy TRX400EX 400EX 32100-HN1-000 OEM ATV” is in sale since Wednesday, July 27, 2016. 2004 400ex messed up wiring | Honda ATV Forum 2004 400ex messed up wiring. Jump to Latest Follow 1 - 17 of 17 Posts. justin0rocks I've got a 1998 Honda TRX450ES Foreman that is giving me headaches. I just got done rebuilding the transmission (had some gear slippage issues), and got it all put back together.