i have a 07 road king and i want to use the accessory switch on handle bars to be able to turn something on and off( a radio) does any body know where the plug is for it as it must have a n end to it somewhere so that i can use it i looked under seat as i though i had heard it was under there somewhere but dont seem to see it. any help is greatly app. thanks

 

Should be in front of battery box. 4 pin deustch connector.

 

its a rectangular plastic box with a rubber cap on it under the rubber cap are 4 small holes they accept duetch conectors(u can use crimp ons cents apeice)or harley adapter harness around 15$, a small 12 volt light tester will help identify each hole one is hot on the aux switch one on the ignition cant remeber the other 2.