The later model (like yours) ACVW's have a couple switches threaded directly into the body of the master cylinder. Are you saying they aren't? If not, what are you using as plugs? If they are still intact, in the M/C and they don't work or are not connected to anything, don't give up and replace them, those seldom fail.
Check them with a VOM or test light after you remove the connectors (isolate the switch, have someone step on the brake pedal for you while you have the VOM connected)
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