VLM6 (LED road light electronic control unit - Caravan)

VLM6 (LED road light electronic control unit - Caravan)

Overview

The VLM6 is an electronic module that can be fitted to Swift Group caravans to fix road lighting incompatibility issues with some tow vehicle and caravan combinations.  
The unit is directly compatible with 2019 model year caravans and 2018 model years caravans fitted with the larger format C44+ fuse box, which was introduced in October 2017.  
The unit can also be fitted to 2016 and 2017 model year caravans (which originally would have used the now obsolete VLM4) with a little extra installation effort by following the guidance further below.

Installation

In 2018 and newer caravans, the VLM6 is a plug and play replacement for the C44+ road lighting fuse box which is located at the front of the caravan. The installation process is described below, but in simple terms the C44+ fuse box is removed and replaced by the VLM6, no extra connections or wires are needed.

In 2016 and 2017 caravans, the VLM6 can still be used, but the mounting hole for the C44 will need to be enlarged to accommodate the larger VLM6 unit, and any tungsten filament lamps (bulbs) fitted to marker lights will need to be replaced with LED equivalents.

The VLM6 has a cooling fan fitted to the unit which operates when the tow car is connected to the caravan and is used to keep the unit cool during normal operation.  It is IMPORTANT that this fan is not blocked or covered by items placed in the bed box area. 

The VLM6 is powered by the vehicle battery supply via the 13-pin connector and cable (pin 9 positive and pin 13 negative) so it is IMPORTANT that the tow vehicle is wired accordingly.

Software version 1.2 - April 2023

We have released an update to the VLM6 software to improve compatibility with the new style 'animated indicators' fitted to some Swift caravan models.  If you are fitting a VLM6 to a caravan with animated indicators please ensure the software version (shown on a sticker on the unit) is 1.2 or above.  If a lower number is show or no number is present, please see your local Swift Dealer who will be able to update the unit's software using a Sargent 'red programming tool'.