Upgrading Multiple-Unit Diesels - M.T.H. Proto-Sound 3.0 Installation Manual

Upgrading Multiple-Unit Diesels

This kit is designed for single diesel or electric locomotives only. There is no
provision for wiring a coupler and/or back-up light into a dummy or non-
powered trailing unit. Similarly, the kit does not provide a way to control
powered trailing units. See the note below on four-motored locomotives as
serious damage can occur to the Proto-Sound 3.0 electronics if warnings are not
heeded.
Four-Motored Locomotives
This kit is designed to upgrade only a single locomotive with one or two motors.
Engines with four motors in two separate body shells will require two upgrade
kits - and thus become two separate Proto-Sound 3.0 locomotives that can be
operated as a lash-up or as separate units.
Warning: Attempting to run three or four motors off of a single Proto-Sound
3.0 board will damage the motor drive circuit and require board replacement.
Lighting In Non-Powered Units
This kit does not provide connections for lights in non-powered (dummy) units.
Non-powered Proto-Sound One units with constant-voltage lighting boards will
work under DCS with no modifications. If the non-powered trailing unit is
equipped with lighting (ie: back-up light) that is connected to the powered unit
through a harness, you can use that existing harness to connect those lights up to
the Proto-Sound 3.0 kit; however, the lights must be upgraded from
incandescent light bulbs to LEDs.
Proto-Couplers In Non-Powered Units
This kit does not provide connections for Proto-Couplers in non-powered
(dummy) units, although it does include two Proto-Sound 3.0 Proto-Couplers.
Note: Original Proto-Sound Proto-Couplers will not work consistently with
the Proto-Sound 3.0 board. The original Proto-Sound Proto-Couplers require
higher voltage to operate and therefore do not open consistently when
commanded with the Proto-Sound 3.0 board. If your unit came with a Proto-
Coupler on the non-powered trailing unit, you can use the existing harness to
connect the newly installed Proto-Coupler on the trailing unit.
Caution: Make sure that the Proto-Couplers are wired correctly as most
Proto-Sound 1.0 Proto-Couplers were chassis grounded. If the
Proto-Couplers are chassis grounded the Ps3 Board will be damaged.
Proto-Sound 3.0 Upgrade Kit Installation Guide - Diesel/Electric
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