Graco 231–406, Series A Instructions-Parts List Manual page 22

Pressure Control Wiring
GRN/YEL wire, E to housing ground
Twisted pair
4 5 6
On/off sw
1 2 3
WHITE
wire on/off
SW–5 to
to L2 on
board
BLACK
wire on/off
SW–2 to
To J3
to L1 on
board
Twisted pair
From control housing,
one red wire to I1
From control housing,
one red wire to I2
Connector from
potentiometer to J3
Twisted pair
Wires J4/J5 to
15/20 switch
Fig 17
L
E
N
Housing ground
I1
I2
J3
J6
J5 J4
Connector from pressure
transducer to J6
BLACK wire, L to on/off sw–1
WHITE wire, N to on/off sw–4
Red wires to I1
and I2 on board
Twisted pair
From control
housing, WHITE
wire to L2
From control
housing, BLACK
L2
wire to L1
L1
J7
GND
Ground wire to
housing ground