14 | Installation
2.3 Input Trigger Settings — Blue Wire
Connect the BLUE wire to switch the vehicle input turn-ON-trigger mode between:
• Standard Trigger (for fixed voltage or temperature compensating alternators)
• Low Voltage Trigger (for variable voltage alternators)
Figure 2.3.1:
Connecting the BLUE wire
STANDARD TRIGGER
Leave and tape over the disconnected
BLUE
wire, or connect to Ground.
LOW VOLTAGE TRIGGER
Connect the
BLUE
wire to D+ for Idle-stop
vehicles, or IGN for continuous Idle vehicles.
Vehicle
Ignition
D+
Table 2.3.2:
Setting the Input Trigger Settings
*1
Input Mode
Blue Wire
Connection
12 V Mode
24 V Mode
ON above
OFF below
ON above
OFF below
Standard
Not Connected, or
Connected to Ground
12.9 V
12.7 V
25.8 V
25.4 V
Low
Voltage
D+ for Idle-Stop
'Ignition' for others
12.0 V
11.9 V
24.0 V
23.8 V
*1 Tested every 100 seconds
2.4 Cable sizing
for the Vehicle Input, Solar Input, Ground and Battery Output
cable thickness and length requirements. Always choose a wire cross sectional area equal to or
greater than what is specified.
Table 2.4.1:
Cable Sizing
Part Number
Cable Install Length
Wire Cross
Sectional Area
Nearest Equivalent
BAE, B&S, AWG
BCDC1225D
1 – 5 m
3' – 16'
≥ 7.71 mm²
8
5 – 9 m
16' – 30'
≥ 13.56 mm²
6
BCDC1240D
BCDC1250D
1 – 5 m
3' – 16'
≥ 13.56 mm²
6
5 – 9 m
16' – 30'
≥ 20.28 mm²
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