Track Power Connection 
On the rear of the Mini Mag there is a pair of connectors used to connect the 
power to the track.  If your train is on the track facing forward and you con-
nect the red terminal to the right rail and the black terminal to the left rail, the 
train will go forward when the forward/reverse switch is in the forward posi-
tion.  If the engine moves backwards, swap the track wires.  Attach the wire to 
the terminal.  If the plastic insulation on the wire has not been removed, strip 
about 1/4” of the insulation off to expose the bare metal part of the wire.   
Speed Governor:
Bridgewerks’ exclusive “speed-stop” can be used as a safety device to limit 
the maximum speed of your trains.  The speed stop consists of a metal plate 
which is held in place with a thumb screw.  To adjust the speed stop, loosen 
the thumb screw, adjust the throttle slide control so that the train is going as 
fast as you want to allow, and then slide the speed stop down to limit the 
maximum speed.  Tighten the thumb screw.  Now you can move the throttle 
control from 0 up to the maximum selected speed. 
Momentum 
The Mini-Mag features an adjustable momentum control which will limit the 
acceleration and deceleration of the trains.  When momentum is at maximum  
and you move the throttle from the minimum to the maximum, the train will 
slowly accelerate from a stop to the maximum speed.  Similarly if the throttle 
is moved quickly from maximum to 0, the train will slowly decelerate to a stop.   
Momentum adds another dimension of realism to your model railroad.   In 
addition, the combination of speed governor and momentum makes it easier 
to limit derailments when younger engineers are at the controls. 
Direction Control 
The Mini-Mag  has a direction control switch which will change the direction 
of the locomotive.  If the locomotive runs backwards when the switch is in the 
forward position, reverse the connections going to the track. 
Speed Control 
The Mini-Mag  has a slide controller to adjust the engine speed.  There is an 
LED which will increase in brightness as the speed is increased, and will 
change color to red if the direction control switch is switched to reverse. 
 
 
 
Overload Protection 
In the event of an overload, the Mini-Mag has two different ways of protect-
ing itself and your train from damage: A manual circuit breaker is on the left 
side of the rear panel.  The button will pop out and the power to the track 
will be cut off.  If this happens, correct whatever caused the overload, wait 2 
or 3 minutes and then push the switch to reset it. 
In addition, there is an automatic thermal cutoff inside the controller which 
will be activated in the event of an overload. This will reset itself automati-
cally in 2-3 minutes after the cause of the overload is removed.   There is a 
red light on the front of the controller which will illuminate if the internal ther-
mal cutoff has been activated. 
Outdoor operation 
Garden railways are often installed outdoors and Bridgewerks controllers 
are built to be used with outdoor railroad layouts.  However, they are not 
waterproof, and as with any electronic equipment, they should not be left 
outdoors when not in use.  To make this easy, the connections are all 
made so that they can simply be unplugged and the controller can be  
carried indoors.