Additional Relays For Glow Plugs; Addition Relay For Light Bar - Cub Cadet 6X4 Shop Handbook

Chapter 9 - Electrical
5.

Additional Relays for Glow Plugs

(Caterpillar)
• There are two relays that operate the glow plugs
on the Caterpillar diesel powered vehicles: a
glow plug timer relay, and a glow plug relay.
• The glow plug timer relay is mounted just
inboard of the driver's side hood and dash sup-
port bracket.
• The part number for the glow plug timer relay is
not listed in the Illustrated Parts List, but it may
be ordered as Cub Cadet part number
725-04218. See Figure 9.5.
Glow plug timer relay
Hood and dash
support bracket
Figure 9.5
Wire
White / Black trace
Orange
Green
Purple
Fuse and relay center
Function
Fused 5A constant hot
Key-on hot
Constant ground
Trigger wire to glow
plug relay.
Timed output.
• The glow plug timer relay governs the operation
of the glow plug relay that is taped into the
engine wiring harness. The glow plug relay con-
trols power to the bus bar that energizes the
glow plugs. See Figure 9.6.
Glow plug relay
Wire
Purple
Green
Red
Yellow
6.

Addition Relay for Light Bar

• Location: Open the hood to reach the fuse and
relay center. It is mounted on the firewall, imme-
diately forward of the steering column.
• If equipped with a light bar, the relay will be
mounted beneath position two of the relay cen-
ter.
278
Figure 9.6
Function
Trigger wire from glow
plug timer relay. Pow-
ers relay windings.
Constant ground for
relay windings.
Constant hot
(Caution, unfused)
Output to power glow
plug bus bar