Frank McElroy Posted September 25, 2022 Share Posted September 25, 2022 I just uploaded a new file explaining how I repaired an Intellitec Board that controls the operation of Big Boy and the battery disconnect Latching Relays. In the mid 2000’s Monaco models Dynasty and above coaches, used an Intellitec PCB in the Rear Run Bay (RRB) (also referred to as RRB PCB #6), to control both the Big Boy relay to connect the chassis and house battery banks together and the Latching relay(s) for the battery disconnect switch (salesman switch) near the PS entry door. Unfortunately, this circuit board is now obsolete and almost impossible to find in a salvage yard at any reasonably price. But you do have options. Some folks have decided to upgrade the system to Blue Sea ML-ACR automatic charging relay to replace the problematic Big Boy, the Intellitec control board, and bypass the battery disconnect latching relay(s). However, the Blue Sea unit does require additional wiring to work with a dash switch control. Others just want the original PCB repaired to work properly. This document explains how I repaired the RRB PCB#6 for a fellow member to enable both the original Big Boy and Latching relays to work with readily available parts. 2 1 Link to comment Share on other sites More sharing options...
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