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Brompton Electric e-Motiq lights

9 March 2026 by
Brompton Electric e-Motiq lights
Brilliant Bikes

Brompton Electric e-Motiq Lights 


This guide is for the Brompton Electric e-Motiq (or MK 2) range of bikes with the motor built into the rear wheel - not for the original Brompton Electric which had the motor built into the front wheel

Rear Light

Rear Light Summary 

The Brompton Electric (e-Motiq or version 2) rear light can't be moved from a no-rack to rack version - the cable is not long enough

The light is mounted just behind the seatpost - where the reflector would be on a non-electric Brompton -and the cable is long enough to reach there

The light plugs into the controller at rear of the bike

No Rack Version

  • Brompton part code: (not currently available)

  • Busch and Muller 2C light 
  • Cable length when completely disconnected: 522mm

More info to follow soon!

No Rack Version Cable Routing

Rack Version

  • Brompton part code: Q104205

  • Busch and Muller 2C light (it's easier to install the light BEFORE fitting the rack)
  • Cable length when completely disconnected: 820mm
  • Tools required: T7 Torx

Brompton Electric Bush and Muller 2C rear light


Rack Version Cable Routing

Starting at the light end and running forwards

Brompton Electric e-Motiq rear cable routing - rack version


There are two spade connectors on the light onto which the cable connects - inside the outer sheath there are actually two wired - for connecting to the two connectors

  • Red on the left 
  • Black on the right
Brompton Electric e-Motiq rear light showing spade connectors


The cable then routes just under the roller wheel on the inside of the rack 

Brompton Electric -Motiq rear light


before routing back up and along the top of the rack and held in place using two plastic clips (we guess you could use zip ties)

These two clips use Brompton code: Q103720

Brompton e-Motiq rear light rack cable clips


It then routes down towards the bottom bracket  (over the top of the cross brace to which the brake caliper is connected) 

Brompton Electric e-Motiq rear light cable routing

It then goes through the third plastic clip (again ou could use a zip tie)

before curving through a guide (its quite tight to push into the guide) and being held in place with a clamp using a bolt which needs a T7 Torx key to remove / tighten

This clamp holds both of the bottom cables in place

Brompton Electric e-Motiq cable clip with T9 Torx driver


The rear light cable then curves upwards and connects into the top of the two smaller connection points

Important: When plugging the lighting cable into the controller, the arrow should be facing towards you - you can see in the below photo that it is visible in the "gap" as it plugs in - the pins are on the control unit - so you don't want to bend them as you plug in if you have the orientation wrong!

Brompton Electric e-Motiq cable plugging orientation


Front Light

Summary: The Brompton Electric (e-Motiq or version 2) front light is a Lezyne E115 which plugs into the front carrier block

There is (as of spring 2026) only one!

  • Brompton part code: Q103648

  • Lezyne E115 SVT compatible light


More info to follow soon!