[timaoux]

pawn Code:

new neon;
    new neon2;
    new car = GetPlayerVehicleID(playerid);
    new Float:X, Float:Y, Float:Z;
    new Float:rX, Float:rY, Float:rZ;
    GetPlayerPos(playerid, X, Y, Z);
    neon = CreateObject(18647, X, Y, Z, rX, rY, rZ, 3.0);
    neon2 = CreateObject(18647, X, Y, Z, rX, rY, rZ, 3.0);
    AttachObjectToVehicle(neon, car, 1.0, 0.0, -0.5, 0.0, 0.0, 0.0);
    AttachObjectToVehicle(neon2, car, -1.0, 0.0, -0.5, 0.0, 0.0, 0.0);

theres have already the position of the neons just change the object id to the color neon you want ^^