BMW R1200RT/R1250RT Forum

Backstory: I bought a 2019 1250RT LE about a year ago, but have only just had occasion to have a look at the battery as I intended to wire in a lead for an Optimate. Having removed the side panel, I found that there were 7 electric leads fitted directly to each of the battery terminals already, which is bloody ridiculous.

I therefore ordered a Fuzeblock from Nippy Normans, which should be delivered on Monday. I've never tried to fit one of these before, but having downloaded the instructions, it seems quite straightforward, even for a numpty like me. I reckon that as long as I don't cut into any wiring to fit the trigger wire, I should be OK.

I telephoned a mate who has a 1200, and he told me that his bike has an accessory socket with a purple wire going into it, which will do the trick, and which pokes out from the back of the petrol tank.

Needless to say, I took the riders seat off today to have a look, and there is no socket to be found. Or any purple wires come to that.

Does anyone know if there are any suitable spare sockets nearby that I could wire a trigger wire into?

The accessory socket may not have enough power to run some things. IRC it has a max of 10A. I fitted a fusebox meant for boats. I ran one live and one negative cable to the box directly from the battery. A lot neater than having lots of wires to the battery

Doctor T wrote: Tue Oct 28, 2025 12:03 pm The accessory socket may not have enough power to run some things. IRC it has a max of 10A. I fitted a fusebox meant for boats. I ran one live and one negative cable to the box directly from the battery. A lot neater than having lots of wires to the battery

He only needs it as a trigger wire there won't be any load on it

There should be an accessory socket on the right hand fairing that you can use

Couldn't find any sockets under the seats. I'm a bit ham fisted, and I can see me breaking something if I try and prise of bits of fairing.

I think I'll end up taking it to an auto electrician and make it someone else's problem.