Q: Why do the arrows on my car riding lantern light, but the gong does not sound.

A: This means that either the lantern or the gong are not set to “car riding lantern” mode.

1. If you have an SA125/SA130-XMXXX mounted in the car, make sure that dip switches 3 through 8 are in the ON position and the R10/R31 resistor has been cut loose from the board. The R10/R31 will be located in a group. Refer to the SA125/SA130 diagram for the location of the resistor group. It is the middle resistor and will have “64” silk screened next to it on the board.
2. If you have an M3491-X or INN3491-X, then set S1 dip switches 3 through 8 and S2 dip switch 1 to the ON position.
3. If you have an MGONG-XX, the set S1 dip switches 3 through 8 to the ON position. You will also need to remove the cover from the gong box and cut loose the resistor with “64” silk screened next to it on the board.  Refer to the MGONG diagram for the location of the “64” resistor.