50118845-001 Rev B 10/15
© 2015 Honeywell International Inc. All Rights Reserved.
Page 6
Figure 5 – Replacing an Earlier Model Power Supply
When this power supply is used to replace an earlier model of power supply, follow the directions below to transfer the wiring from the old
power supply to the new power supply. Note that the number and labeling of connectors vary between the power supply models.
New Power Supply
Old Power Supply
Verify the current ground wire is connected as follows. It may be necessary to alter the ground wire connection or add a ground wire.
See the earlier equipment specific diagrams for additional grounding details.
1.
Disconnect power supply from vehicle power.
2.
Disconnect the wire from the + connection of the output block on the old power supply. Connect to the Vo+ connection on the new
power supply.
3.
Disconnect the wire from the - connection of the output block on the old power supply. Connect to the Vo- connection on the new
power supply.
4.
Disconnect the wire from the ground (
) connection of the output block on the old power supply. Set this wire aside for now.
5.
Disconnect the wire from the + connection of the input block of the old power supply. Connect to the Vin+ connection on the new
power supply.
Shown With Lid Attached:
•
Lid is secured with screws on the side of
lid.
Shown With Lid Removed:
•
Input and output connector blocks under lid.
•
One positive (Vin+), negative (Vin-) and
ground (
) connection in input block.
•
One positive (Vo+) and negative (Vo-)
connection in output block.
Shown with wiring
Shown With Lid Attached:
•
Lid is secured with screws on the top of
lid.
Shown With Lid Removed
•
Input and output connector blocks under lid.
•
Two positive (+), two negative (-) and two
ground (
) connections per terminal block
Shown with wiring
Caution:
For battery powered vehicles:
The ground wire must be connected to the vehicle
chassis ground.
For internal combustion engine powered vehicles:
The ground wire is connected to the vehicle chassis
ground, which can also be battery negative.
!
