[OPremium]

pawn Код:

CMD:trailerlightson(playerid, params[])
{
    if(GetPlayerVehicleSeat(playerid) != 0) return SendClientMessage(playerid, 0xFF0000FF, "ERROR: You are not driving a vehicle!");
    if(!IsTrailerAttachedToVehicle(GetPlayerVehicleID(playerid))) return SendClientMessage(playerid, 0xFF0000FF, "ERROR: No trailer attached!");
    SetVehicleParamsEx(GetVehicleTrailer(GetPlayerVehicleID(playerid)), 1, 1, -1, -1, -1, -1, -1);
    SendClientMessage(playerid, 0xFFFF00FF, "Trailer lights turned {00ff00}on{ffff00}!");
    return 1;
}

CMD:trailerlightsoff(playerid, params[])
{
    if(GetPlayerVehicleSeat(playerid) != 0) return SendClientMessage(playerid, 0xFF0000FF, "ERROR: You are not driving a vehicle!");
    if(!IsTrailerAttachedToVehicle(GetPlayerVehicleID(playerid))) return SendClientMessage(playerid, 0xFF0000FF, "ERROR: No trailer attached!");
    SetVehicleParamsEx(GetVehicleTrailer(GetPlayerVehicleID(playerid)), 0, 0, -1, -1, -1, -1, -1);
    SendClientMessage(playerid, 0xFFFF00FF, "Trailer lights turned {ff0000}off{ffff00}!");
    return 1;
}

Something like that?