Paccar Kenworth T800 2012, Manual

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8-23
08/12
Section 8
Electrical
SPARE RELAYS BODY BUILDER INSTALLED
(For loads exceeding 20 amps)
There are two spare relay locations in the central electrical panel. To access these relays there are two spare
relay breakouts behind the LH gauge cluster labeled, “SPARE RELAY #1, and SPARE RELAY #2”
To connect to
these relays you can use one of two harnesses also available from you local Kenworth Part Department. P92-1947-1, -3
for accessing the normally OPEN contact of the relay (87) or P92-1947-2, -4 for accessing the normally closed contact of
the relay (87a). See Figure 8-17.
1. Remove the LH gauge panel above ignition key switch.
2. From behind the gauge panel, locate one of the spare relay connectors not currently used. See Figure 8-16.
FIGURE 8-16.
Spare Relay Connectors
3. Plug one end of a spare relay harness (P92-1947-X) into the appropriate spare relay circuit connector.
4. The breakout labeled “SWITCH” should be connected to a switch. By grounding this circuit the relay will be activated.
(coil will energize)
5. The breakout labeled “COMMON” should be connected to power. The -3 & -4 versions allow you to connect directly to
one of the 18 available spare power breakouts. See ADDITIONAL SPARE CIRCUITS section.
6. The breakout labeled “NORMALLY OPEN” or “NORMALLY CLOSED” is the switched power from the relay.
7. Insert a K301-179 relay in the central electrical panel corresponding to the breakout use.