I was thinking of adding rear ditch lights to a scratch build if I modeled the NS. How would I wire them to a PS2 board? I could add them to the front ditch's wiring but shouldn't they be directional? Are the real ones directional? They would be LEDs by the way.
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Joe,
How would I wire them to a PS2 board? I could add them to the front ditch's wiring
You cannot add them directly to a PS2 board and have them work correctly. That's why the rear ditch lights on the PS2 Genset don't work as ditch lights, just as rear headlights.
PS3, however, has provision for rear ditch lights.
If you have a reversing voltage source on the board, these diodes could be installed so that Forward has one set of lights, Rear off. And Reverse has the other set of lights, Forward off.
Bi-color directional lights on my Weaver E8 were wired that way. Note this is an EOB upgrade.
Wiring diagram. Someone with more expertise than I needs to discuss modification for the ditch light adds to an MTH unit.
A Weaver EOB upgrade to an early Atlas Dash 8 had the unit returned with the Ditch lights disconnected/no plug-in on the board for them. I did a similar hook-up from track power/with some Atlas email instructions. Marker lights were also left disconnected. Original Board was an early SAW GenII board.
If you're looking for the functionality of them flashing with the horn, you need a signal that the horn has sounded, I know of no signal that does that from the PS/2 board. If you just want ditch lights that are on, you can wire them in parallel with the headlights.
John,
If you just want ditch lights that are on, you can wire them in parallel with the headlights.
As I stated above...
That's why the rear ditch lights on the PS2 Genset don't work as ditch lights, just as rear headlights.
Thank you!
Wouldn't it depend on the soundfile for PS-2. I thought I saw a diesel that used it for a rear set of lights. Don't know if they flashed though. Some models use one bulb per ditch pin to power the forward ditch lights. Other models use a double bulb out of one of the pins for the Fwd ditch light leaving Ditch 2 available. The sound profile would dictate how Ditch 2 would operate (Steady for Number boards or directional). I would imagine it would have to be one of the premier diesels if it had front and back ditch lights. You can always turn ditch lights on using the remote, but both sets would be on and flash with horn. G
GGG,
I previously spoke with MTH R&D and was told that it was not possible to add a second pair of functional ditch lights to a PS2 diesel.
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