If the OEM ring coupling inner diameter fits the banjo bolt for the Brembo master cylinder, I can see no reason you would not be able to use the OEM line.
OH--That thing in your picture is a fluid pressure switch. Those are used to activate a brake light if you remove the rear brake master cylinder brake light switch. This is often done when rearsets are installed on a street bike. The rearsets are not equipped with a bracket to hold the OEM brake light switch so you need to install one of those pressure sensor switches to retain function of the rear brake light.
The OEM clutch master cylinder has a switch. It is a small plastic button that gets pressed in when you pull the clutch lever. When the transmission is in gear, this switch enables you to start the engine ONLY if the clutch lever is pulled. Otherwise, the bike would jump forward on the starter motor and if it started, it would take off into a wall or something. The clutch switch is for safety.
So you must not be able to use the OEM clutch switch with the Brembo master cylinder. The Brembo master cylinder must require this pressure sensor switch to detect fluid pressure when the clutch lever is pulled. The OEM clutch switch is mechanical and this one operates on fluid pressure. The only problem is that I do not think the OEM wiring has a connector you could hook up to the switch for the Brembo. If there is no connector, I imagine you would have to cut the wire to remove the OEM master cylinder. You probably could insert an electrical contacts from the OEM wiring for the clutch switch into the Brembo pressure sensor switch.
A) I would rather not cut OEM wiring unless absolutely necessary.
B) You can use a regular banjo bolt instead of this pressure sensor switch. You will need to remember to never start the bike in gear unless the clutch lever is pulled.
C) How do you disconnect the OEM clutch master cylinder wire so that the master cylinder can be sepparated from the bike? Is it possible to do that without cutting the wires? I don't recall ever seeing a connector for this wire. If there is a connector, chances are good you can just hook the female connector from the wiring harness onto the male connector of the switch that is included with the Brembo.
Does the clutch switch have a wire connector? Have a look.
* Last updated by: Rook on 10/29/2020 @ 7:26 PM *
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