48 Sportster Disable Brake Lights
I have a 2013 48 (US Spec). I have added a tail/brake light under the lip of the fender but am trying to disable the brake lights that are integrated with the turn signals so as to meet UK requirements. I've tried covering up both filaments of the bulb with tape but that hasn't worked. I took a multimeter to the wiring under the seat and found that both the purple and blue wires have voltage when the brake is applied. Does anyone know a way to disable the brake light so only the turn signal will come on? Thanks!
On a UK spec bike that has only indicators for run, brake and turn they are supplied with LED lights with 3 elements such that there is an amber section and a red section.
The 2008 here is a US import and I changed the indicators for UK spec ones, single filament for indicators only. Being a Custom it already has a central tail light also no converter module.
Wiring diagram here - https://serviceinfo.harley-davidson....d5fd65454!!1!2
You will probably need to find a way to remove the converter module.
Last edited by Andy from Sandy; Sep 4, 2023 at 11:57 AM.
1/ Disconnect the blue wires, if the bulbs give off white light, once the blue wires are gone, you can swap the red lenses for amber ones.
2/ Swap the 1157 rear bulb holders for 1156 holders with 1156 bulbs.
3/ Swap both of the domestic indicators for LED units as below, you will need to install voltage equalisers for the LED lights.
There appears nothing in the parts list about needing a load equaliser. Not saying there isn't one there somewhere just it is not popping out looking at a parts list.
Not assuming anything but it would look to be the cleanest setup to convert from domestic to international.












