What are these wires for?

[Incubus]

There are four wires running from the front brake master cylinder on my new XS11 project bike. Two are the usual brake light connections. The other two are a hot connection and a ground that come from the bottom of the reservoir. Clearly this is not stock (although it is from a Yamaha as the reservoir cap attests) and since I don't know what it came off of I don't know how I would rebuild it (frozen as a stone monument), but I am curious what those additional wires could be for. There are also two orphan female bullet connection in the headlight bucket, one hot one not, that I figure these wires hooked up to. There are no unexplained gauges or idiot lights or anything, however. so if this was some kind of reservoir fluid level monitor or something I don't know how it passed its message along.

Anybody know what those wires might be for? Power brakes?

Patrick

[CatatonicBug]

Good chance it is for a fluid level sensor. The XJ has that in the rear MC.

[TopCatGr58]

And Patrick,

Those 2 wires in the headlight are for accessory lights, fairing hookup, etc., don't bother using them.

The microfiche for the XJ front MC only shows 2 wires, not four, but on YOUR MC, sounds like a good guess for fluid level checker, the other 2 you said are the brake light switch.
T.C.