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1.14.8 M3000 Board Pin Positions and Harnesses<br />
Connector From/To Harness PN<br />
Pin<br />
# Function Voltage Wire Color<br />
J1 SD Card<br />
1 12VAC In 12VAC<br />
2 Ground<br />
3 12VAC In 12VAC<br />
4 FV Heat Demand<br />
5 V Relay 12VDC<br />
6 DV Heat Demand<br />
7 R/H B/L 12VDC<br />
8 Analog Ground<br />
Black<br />
J2<br />
Interface<br />
Board to<br />
Computer<br />
8074199<br />
SMT Computer to<br />
Interface Board<br />
Harness<br />
9<br />
10<br />
11<br />
12<br />
L/H B/L<br />
ALARM<br />
Sound Device<br />
ALARM<br />
12VDC<br />
5VDC<br />
13 FV Probe<br />
14 Common Probes<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
DV Probe<br />
1 Vat #1<br />
J3<br />
Interface<br />
Board Ground<br />
to Computer<br />
Computer Locator<br />
Harness<br />
2<br />
3<br />
4<br />
5<br />
Vat #2<br />
Vat #3<br />
Vat #4<br />
Vat #5<br />
Black<br />
6 Ground<br />
J4 Not Used<br />
1 Ground Black<br />
J6<br />
Next M3000<br />
J7 or Network<br />
Resistor<br />
8074546<br />
Computer<br />
Communication<br />
Harness<br />
2<br />
3<br />
4<br />
5<br />
6<br />
CAN Lo<br />
CAN Hi<br />
Red<br />
White<br />
1 Ground Black<br />
J7<br />
MIB J1 or<br />
previous<br />
M3000 J6<br />
8074546<br />
Computer<br />
Communication<br />
Harness<br />
2<br />
3<br />
4<br />
5<br />
6<br />
CAN Lo<br />
CAN Hi<br />
Red<br />
White<br />
1-39
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