As I have benefited from many postings on this forum, it's time to share a few modifications I have recently made to my ST3.
Not to be detoured from my favorite new pastime by inclimate weater, I determined it would be necessary to accessorize the ST with heated grips, and the ability to power heated clothing. In that pursuit, here are the results of the endeavor.
The first task was to find the most ideal location from which to power heated clothing. I did not want wires traveling up around the steering area, and also did not want to be limited to using a tank bag. The stock power accessory location as shown below was designated as the best location from which to power rider clothing.
The next step was determining what type of power outlet jacks were to be used. After looking at BMW, SAE, and coax styles, the coax style was choosen because of it's small size, and it is the standard type used by warmnsafe clothing. A bracket was fabricated which integrated two seperately controlled coax jacks, as well as the standard BMW style plug.
A dual Heattroller would be used to variably control the heat output of the coax jacks, and a hand grip Heattroller would be used to control the heated grips. These were mounted to the left front fairing area as shown in the images below.
The actual heattroller black boxes were mounted near the left rear of the seat of the bike under the plastic side panel. The system is protected by the same 20A fuse as the stock BMW accessory outlet circuit.
In order to ensure even heated grip temperature into both the right and left grips, an extra thick length of heat shrink was used, and throttle side grips which have a larger internal diameter were used on both sides. This in addition to the built in symtec resistance difference between the right and left sides, has ensured a very equal temperate on both grips.
The WarmnSafe heated liner has a coax input cord in the left pocket which plugs directly into the side of the new power outlet panel. This makes the installation and use very clean and simple without cords running the the front of the bike.
The only additional item I'm waiting on is some custom billet aluminum knobs I will be replacing the cheap looking plastic heattroller knobs with.
All in all, what I could consider a successful project.
Not to be detoured from my favorite new pastime by inclimate weater, I determined it would be necessary to accessorize the ST with heated grips, and the ability to power heated clothing. In that pursuit, here are the results of the endeavor.
The first task was to find the most ideal location from which to power heated clothing. I did not want wires traveling up around the steering area, and also did not want to be limited to using a tank bag. The stock power accessory location as shown below was designated as the best location from which to power rider clothing.

The next step was determining what type of power outlet jacks were to be used. After looking at BMW, SAE, and coax styles, the coax style was choosen because of it's small size, and it is the standard type used by warmnsafe clothing. A bracket was fabricated which integrated two seperately controlled coax jacks, as well as the standard BMW style plug.

A dual Heattroller would be used to variably control the heat output of the coax jacks, and a hand grip Heattroller would be used to control the heated grips. These were mounted to the left front fairing area as shown in the images below.


The actual heattroller black boxes were mounted near the left rear of the seat of the bike under the plastic side panel. The system is protected by the same 20A fuse as the stock BMW accessory outlet circuit.
In order to ensure even heated grip temperature into both the right and left grips, an extra thick length of heat shrink was used, and throttle side grips which have a larger internal diameter were used on both sides. This in addition to the built in symtec resistance difference between the right and left sides, has ensured a very equal temperate on both grips.
The WarmnSafe heated liner has a coax input cord in the left pocket which plugs directly into the side of the new power outlet panel. This makes the installation and use very clean and simple without cords running the the front of the bike.
The only additional item I'm waiting on is some custom billet aluminum knobs I will be replacing the cheap looking plastic heattroller knobs with.
All in all, what I could consider a successful project.