MoTeC PDM30 - Manual (Page 9)

6 Installation
Output Wiring
All outputs are high side type outputs; they switch Batt+ to the output pin.
They all have hardware thermal overload protection, fault logic and over-
current logic.
Paralleled Outputs
Two or more output pins can be connected in parallel to increase current
capacity. Outputs that are connected in parallel must all be of the same type;
either all 8 Amp or all 20 Amp outputs.
Wire Gauges
The wire gauge must be chosen to suit the current consumed by the
connected device and to ensure that the voltage drop is acceptable. On long
runs it may be necessary to use a heavier gauge wire to minimise voltage
drop.
The wire gauge must also be compatible with the connector pin; using a
smaller than recommended wire gauge may result in a poor crimp.
Suitable wire gauges are 24# to 20# for the 8 Amp outputs and 20# to 16# for
the 20 Amp outputs. See Wiring for details.
Output Devices
Windscreen Wipers
The PDM can drive windscreen wiper motors; however the PDM cannot be
connected to both the fast and slow motor windings at the same time. The
voltage generated by the slow winding during fast operation will cause braking
of the motor and possible damage to the PDM.
A wiper unit can be wired in a number of ways. The following schematics are
shown for 'common-ground' wiper units. For 'common-positive' wiper units the
schematics must be adjusted accordingly.
1. OEM Controller Method
PDM
Park
Switch
Home
M
S
F
OEM
controller
Control
Switches
Output