Hello, so I made a transfer case that would have selectable FWD, RWD or 4WD for the sunburst, i also made a driveshaft for the coupling to work. The problem is that i cannot figure out why the front wheels wont engage. I suppose the problem is that there is no driveshaft for the front wheels, but i'm not sure. I also renamed the transfercase to "centerdiff" so the stock differentials would work. Anyway, here is the code for the transfer case: "sunburst_transfer_case_4WDSelectable_Dani_KOM": { "information":{ "authors":"Dani_KOM", "name":"Selectable FWD/RWD/4WD HiLo Transfer Case (Dani_KOM)", "value":2000, }, "slotType" : "sunburst_transfer_case", "controller": [ ["fileName"], ["4wd", {"shaftName":"transfercase_R", "shaftName":"transfercase", "rangeBoxName":"rangebox"}], ], "powertrain" : [ ["type", "name", "inputName", "inputIndex"], ["rangeBox", "rangebox", "gearbox", 1, {"gearRatios":[1,2.2], "uiName":"Rangebox"}], //locked center diff ["differential", "centerdiff", "rangebox", 1, {"diffType":"locked", "lockTorque":8000, "friction":5, "uiName":"Transfer Case", "defaultVirtualInertia":0.1}], //disconnecting rear shaft ["shaft", "transfercase_R", "centerdiff", 1, {"canDisconnect":true, "friction":0, "uiName":"Rear Output Shaft"}], //disconnecting front shaft ["shaft", "transfercase", "centerdiff", 1, {"canDisconnect":true, "friction":0, "uiName":"Front Output Shaft"}], ], }, And here is the code for the driveshaft: "sunburst_driveshaft_4WD_Dani_KOM": { "information":{ "authors":"Dani_KOM", "name":"4WD Rear Driveshaft (Dani_KOM)", "value":400, }, "slotType" : "sunburst_driveshaft", "powertrain" : [ ["type", "name", "inputName", "inputIndex"], ["torsionReactor", "torsionReactorR", "transfercase_R", 1, {}], ["shaft", "driveshaft", "torsionReactorR", 1, {"breakTriggerBeam":"driveshaft", "uiName":"Rear Driveshaft", "electricsName":"driveshaft", "friction":2}], ], "torsionReactorR": { "torqueReactionNodes:":["e2l","e2r","e3r"], }, "props": [ ["func" , "mesh" , "idRef:", "idX:", "idY:", "baseRotation" , "rotation" , "translation" , "min", "max", "offset", "multiplier",], ["driveshaft", "sunburst_driveshaft", "f3r", "f3l", "f8r", {"x":0, "y":0, "z":0}, {"x":0, "y":1, "z":0} , {"x":0, "y":0, "z":0}, -360, 360, 0, 1,{"breakGroup":"driveshaft","deformGroup":"driveshaft","optional":true}], ], "beams": [ ["id1:", "id2:"], //driveshaft {"beamPrecompression":1, "beamType":"|BOUNDED", "beamLongBound":0.02, "beamShortBound":0.02}, {"beamSpring":0,"beamDamp":0,"beamDeform":1500,"beamStrength":3500}, {"beamLimitSpring":10001000,"beamLimitDamp":250}, ["rdiff","tra1", {"name":"driveshaft","optional":true,"breakGroup":"driveshaft","deformGroup":"driveshaft"}], {"beamPrecompression":1, "beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0}, ], }, Thank you in advance, for the help.