IS it possible to by pass the brake safety switch at the master cylinder on a 950 sport? Had one go out already and it appears im having the same issue again. Power drop off. This was one of the possible causes of the power drop off issue per the dealership. The other was thought to be the seatbelt safety switch  which has been disconnected. This switch is only $60 but this is the second time this problem has shown up in the last 2 years. The switch was replaced and the problem appeared to be solved, but has returned

[2015 Z Force 800 53/Trail EPS]

Not 100% familiar with the 950's systems but to have something on the brake system other then a switch for tail brake lights and/or fluid levels would seem very odd.. I would look elsewhere for power loss issues...like voltage levels, fuel pressure/volume issues, water in the tank or filter, maybe CPS issues...ect. 

Id never heard of it before either. This is the second time this issue has shown up. The dealer pointed me in that direction on the first go arouind

Dearest Merlin,

I have been in the Automotive industry for many decades in all forms of roles, been working with ATVs for the same period.

Never ever have I come across this one seems the dealer is clutching at straws. Unless they are only telling you what you need to know and there is some critical issue they will not share with you.......hmmmm.

It's an impossible scenario, i.e. a brake switch or a brake switch circuit causing a power loss, no no, start again bud.

Start with describing the symptom or fault but blank out the brake switch and the brake switch circuit.

The only way any circuit can cause a power loss or drop in engine performance is if that circuit shares the same path to Earth/ground as the petrol injection ECU. An extremely rare occurrence I must state, unless some gorilla has rewired your whole loom. Petrol Injection ECU's tend to have dedicated earth/ground points and to my knowledge and experience do not share that same ground point with other circuits directly. However, one must not forget that the whole chassis/frame serves as and Earth return to the battery. 

GMSAHFR