Reply to "replacing proto 2 with proto 2"

GGGOGR Forum Member

It won't work. Those harness plugged into the board in the engine. Since the board goes into the tender now, you need to use the PS-2 3V harness.

The tach and bulbs are all the same, but how they are connected to the board is the issue.

I assume this is the RK version from the freight set? If you can mount the board in the engine around where the 5V board was, then you just need to swap the connectors from the 5V board (black), onto the 3V board (white). Than all you need to do is plug the original harness into the new 3V board.

You do have to change the speaker to 4 ohm and change the battery and harness to the 2.4V battery.

Or get a Steam upgrade kit and upgrade with those harness and parts. G

10/6/159:02 AM

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