Power Specifications:

• Input voltage (B and I): 9 to 18 volts
• Normal current draw: less than 0.25 amps
• Current protected (self-resetting): BAT(1A), IGN(0.25A), PUMP(0.25A), FAN(0.25A), O(0.25A)
• Main Control Circuit Voltage: 9 volts
• Thermistor Control Voltage: 6.6 volts

Timing Characteristics:

• Pump Pulse On-time: 0.5 to 3 seconds
• Pump Pulse Off-time: 2 to 14 seconds
• Initialization time: less than 0.5 seconds
• After-run: 10 to 270 seconds

Connections:

• BAT — Battery Connection
• IGN — Ignition Connection
• GND — Ground Connection
• PUMP — Pump relay ground for activation coil
• FAN — Fan relay ground for activation coil
• OVER — Overheat warning device ground (less than 0.25A)
• T+ — Thermistor Connection
• T- — Thermistor Connection

LED Activation triggers:

• Green — 9 volt power is on
• Blue — Pump relay grounding active
• Yellow – Fan relay grounding active
• Red – Overheat grounding active
• Green, Blue, Yellow and Red (engine not overheating) — Open wire to thermistor
• Blue, Yellow and Red — Circuit failure

Jumper configurations:

• JP1 — Enable on-board Thermistor emulator. The thermistor must be disconnected from T+ if JP1 is shorted.
• JP2 — Shorted will disable After-run
• JP3 — Shorted will enable the Pump during After-run (Fan only otherwise)
• JP4 — Open will extend the range of the Off-time pulse from 2 to 8 seconds to 8 to 14 seconds.

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