Glue a piece of the plastic supplied with the kit to the frame as shown, ensure that the plastic clears the gearbox front by approx 1.5 mmTape down the decoder into the recess and loop the wires and refit the 8 pin connector ensuring the orange wire goes to the number 1 pin on the plug, this is marked with a small asterisks or triangle on the plug PCB.
Mark one of the speaker wires for about 10 mm with a black pen then place a black dot onto the speaker lug which is attached to the wire and unsolder from the speaker. Using a length of brown wire extend the speaker wire to allow both wires to reach the speaker located at the front of the locomotive.
Drill 1.0 mm hole thru the speaker enclosure and feed the wires thru the hole into the speaker enclosure. Re-solder the wire with the black mark to the solder pad with the black dot.
Now slide the speaker cover down the wire and then glue the speaker cover to the top side of the speaker frame. Set aside and allow to dry.
Do not get glue onto the speaker.
THIS PROCEDURE IMPORTANT TO GIVE
MAXIMUM SPEAKER PERFORMANCE