@vfr400
Your logic seems flawed to me ....
Obviously I have not explained my idea well enough - let me have another go: (apologies if over simplified
)
> The KT Controller is located in a separate compartment in the front of the battery box and the battery box is a rear rack mounted affair
> The KT LCD5 display has as part of it's feature set, the ability to enable lighting via one of the KT controller's leads: the 2-pin Julet connector labelled 'Light Output'
> As now revealed, the current available from the 'Light Output' connector is not sufficient for the lights that I have.
THE PLAN
> is to use the 'Light Output' as a
controlling signal for something like a MOSFET or Solid State Relay and these components are to reside in the battery box's front compartment alongside the KT Controller
> The MOSFET (or SSR)
- will pick up the battery supply, via a suitably rated fuse, from the supply line feeding the controller
- the controlling signal will be disconnected from the 2-pin Julet connector lead at the PCB end and fed to the MOSFET to enable it to provide the
switched lighting supply
> the
switched lighting supply will be connected to the original (and redundant) 2-pin Julet connector to provide a convenient connection to the front and rear lights
So far then, the only additional wiring has been a small amount of wire for the internal connections between the KT Controller and the MOSFET circuitry.
ENHANCED PLAN
> Further, the wiring loom from the front mounted LCD5 display includes along with the brake sensor leads, a throttle lead which I do not use. When I have the controller apart, I will look at the possibility of isolating the leads for the throttle and using them to pass the
switched lighting supply to the front of the bike for connection to the front lamp. I will of course need to determine if the throttle lead can take the curent for the front lamp.
In summary, the only extra wires/wiring will be the internal bits as described above, a short length of cable between the battery box's external 2-pin Julet connector and the rear light, and depending on whether I can usitilise the existing throttle cable or not, some other cable for the front light.
The only way it would make sense to me is if you were able to run the lights directly from the controller, but the power provided isn't sufficient to run a decent headlight
.
Functionally I think my plan achieves what you say, albeit with the addition of the MOSFET circuitry, which for me is not much of a challenge (retired electronics engineer, albeit many years ago).