This motherboard is designed to replace the existing circuit board in a Bachmann Heavy 4-8-2. This board is designed to receive a WOW121 or EU621 decoder and provides an onboard Keep Alive® (KA2 style) for uninterrupted performance over troublesome tracks. This motherboard includes onboard resistors for all of the LED solder pads.

NOTE: this product does not function without a decoder. Pick up an EU621 or WOW121 decoder to use this product.

NOTE: This product does not function without a decoder. Pickup an EU621 or WOW121 decoder to use this product.