2004-2005 Honda TRX450R Factory Sevice Manual, Page 318Get this manual
ELECTRICAL
HANDLEBAR SWITCH
INSPECTIO N
Rem ove the op cover (page 3-4)Disconnect th handleba switc 4P co nnector and headlight 3P black co nnector
Check for co nti nuity between the switch si de co n-
nector terminals in each switch pos ition Continuity should ex ist between the colo code ire as shown bel ow:
ENGINE STOP SWITCH
DIMMER SWITCH
LIGHTING SWITCH
OFF RUN OFF
L1GHnNG SWITCH DIMMER SWITCH COLOR