appears the brown plug end might be the one that plugs into under the fuse box here . here is an visual fuse box underside pic. I think it might be the middle green position .
IIRC that green wire goes to the heater blower switch. Use a piggyback connector on the green wire then your cruise power wire. Make sure both blue wires are connected to the brake switch. It “should” work unless there’s an actual issue with the servo.
