PREVOST H3-41 Maintenance Manual page 1000

SECTION 23A: ACCESSORIES - H3 SERIES
On the vehicles equipped with this feature, the
VECR fuses F117 & F119 are replaced by
CB117 (20 Amp) & CB119 (30 Amp).
14.1 A40 CONNECTOR
A40 connector is located in the front electrical
and service compartment (aka front junction
box). This connector is used to connect a brake
controller.
FIGURE 43: A40 CONNECTOR
Four circuits:
1) black 12V power (from ignition)
2) white ground
3) red input: 12V brake application signal
from VECT (coach brake lights)
4) blue output: brake application signal to
the trailer
14.2 7-BLADE RV/TRAILER CONNECTOR
Seven circuits:
1) white ground
2) blue output: brake application signal
to the trailer
3) brown taillights
4) black 12V supply for trailer
accessories
5) yellow left turn signal
6) green right turn signal
7) purple backup lights
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PA1621 Maintenance Manual All Series | Jan 2020
FIGURE 44: 7-BLADE TRAILER/RV CONNECTOR ON
TRAILER HITCH