GP38-2

Disassembly:

4 small screws that hold the battery boxes, 12 large screws: 4 under each truck, and 4 under fuel tank.

QSI

While testing the QSI unit, a note on where the switches are:

4 switches on the underside, between fuel tank and rear truck.

from engineers side to fireman's side: on is away from cab..

right left

motors lights smoke sound

10 minutes about 20 drops

tried 40 drops, one quit about 9.5 minutes, the other 11.25 minutes, then turned itself back on and ran another few seconds, less than one minute

they both restarted when additional fluid was added (motors started, did not remove power, engine was shut down)

QSI wiring - board id P92016, (different from the one from Tony, which is P72674)

board jumper set for track power 

smoke unit wiring - two smoke units, one power lead red & black wires. Plugs into smoke jack on main board, SMOKE P4
note: wire colors reverse at JST connector

front class lights (short hood) yellow and green. (These are 3-pin bicolor leds)... connects to LAMP P7

rear class lights, numberboards, backup light (long hood) yellow and green. (The backup lights are leds, the class lights 3-pin bicoor leds, numberboards incandescents) ... connects to LED1 P8

headlights and cab lights black and white (cab light incandescent, headlights leds) LED2 P16 (in line with P7 & P8)

speaker has double plugs, goes to main and daughterboard, SPEAKER SWITCH P3 on main board, and speaker on corner of daughter board.

4 pin plug red plastic F P1 goes to front truck

4 pin plug green plastic R P2 goes to rear truck