I have a 2013 Switchback Dyna, my question is fitting a set of ape hanger bars, how high can I go while retaining the original cables and wiring etc? As its an ABS model, I am hesitant because of the brake line and the junction under the headlight.

try this site, it is a Switchback only site, they have most answers and if not just ask and someone will be able to help.

http://switchbackowners.proboards.com/