Hello there,
put this in the Init of your "Repair Offroad" :
this animate ["HideServices",0];
this addAction ["turn Beacons ON",{(_this select 0) animate ["BeaconsServicesStart",1]},[],50,false,true,"","_target animationPhase 'BeaconsServicesStart' < 0.5 AND Alive(_target) AND driver _target == _this"];
this addAction ["turn Beacons OFF",{(_this select 0) animate ["BeaconsServicesStart",0]},[],51,false,true,"","_target animationPhase 'BeaconsServicesStart' > 0.5 AND Alive(_target) AND driver _target == _this"];
BeaconsStart = blue Beacons (Police Boat have blue and red Beacons)
BeaconsServicesStart = orange Beacons (only in the Repair Offroad)