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Installation in a Bachmann DCC GP9

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Pequeajim:
Any hints as to the best way to install a Ring Engineering LM-3S module in a Bachmann DCC, (no sounds) GP9?

There is an 8 pin plug in it, but I want to get the lights as well as adding other lights to the engine.  I'm using this as a learning task for me.

Thanks
Jim

Pequeajim:
Here is a pic of the frame with the shell off.

G8B4Life:
Well you've got two choices. Harness or hardwire.

With a harness you'll get the front and rear light directly to the factory lighting board. Any extra lights you'll need to wire up yourself using the extra wires on the 9 pin harness (see next paragraph) and also the 6 pin harness for the LM (included with sound LM's).

You'd need a 9 pin to 8 pin harness. Plenty of those on the market and a quick search of websites from TCS, Digitrax, NCE, Soundtraxx etc should give a lot of different harness length options.

With a hardwire install, you'll need to discard the factory lighting board and wire up everything yourself, but you will give yourself some extra room by doing so; though it appears that there might be ample room for a harness install anyway.

I see a couple of RF chokes on the factory lighting board. If you do a harness install keeping the factory lighting board those chokes will likely have to be removed. There may be a capacitor wired across the motor too that will also likely need to be removed.

- Tim

Pequeajim:
Thanks Tim, I'm swinging over to Yankee Dabbler this morning to try to find the part.

Pequeajim:

With a harness you'll get the front and rear light directly to the factory lighting board. Any extra lights you'll need to wire up yourself using the extra wires on the 9 pin harness (see next paragraph) and also the 6 pin harness for the LM (included with sound LM's).

I choose the harness option...

You'd need a 9 pin to 8 pin harness. Plenty of those on the market and a quick search of websites from TCS, Digitrax, NCE, Soundtraxx etc should give a lot of different harness length options.

Picked up one from Yankee Dabbler today.  I plugged it in and it going the LM3s, however, it failed on the load test.  I could not get it to move at all.

With a hardwire install, you'll need to discard the factory lighting board and wire up everything yourself, but you will give yourself some extra room by doing so; though it appears that there might be ample room for a harness install anyway.

I thought that I would just use the front and rear directional lighting until I setup the loco, then hard wire anything else I need.

I see a couple of RF chokes on the factory lighting board. If you do a harness install keeping the factory lighting board those chokes will likely have to be removed.   here may be a capacitor wired across the motor too that will also likely need to be removed.

Could this be affecting the speed control?

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