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Page 12
Connecting to Ground and Power
Blue Wire - Switched Power
• With the key OFF, use the voltmeter to locate an IGNITION line with switched
power and attach the Blue Wire to the line by splicing directly to
the lead or by using a wire tap (recommended).
• Do NOT use an inline fuse on this line.
• Do NOT use accessory Power.
• To determine a switched power source:
1) Ensure the Driver Door is OPEN
2) Select a wire
3) With key OFF use voltmeter to measure the DC voltage on the wire - it should
show 0 VDC
4) Start the engine and confirm that the voltage of the same wire is 13.1 VDC or
higher
5) Turn the Key OFF and confirm that the voltage of the same wire is 0 VDC
To complete installation proceed to next page
3500 Unit
Ground
Blue Wire
Black Wire
Red Wire
Constant Power (Battery)
Switched Power