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The Delphi Mefi 4 & 5
Marine Electronic Fuel Injection MEFI-4 & 5
Features:
Cooling Fan Control
RPM Reduction; ECM will automatically limit engine RPM if the coolant
temperature exceeds 235 degrees and will automatically reset after the
ignition is turned off and the engine has cooled below 230 degrees.
RPM Control; Pre programmed rev limit
Break in Mode; (see break in procedure)
Wire Harness
Customer harness built to meet OEM specifications
Includes fuses and relays for ECM, Fan A, Fan B, and Fuel Pump
12V Pos Connect directly to positive side of battery or equivalent.
12V Ground Connect to negative battery terminal or engine.
Ignition Connect to +12 VDC from ignition switch. Ensure this
connection maintains +12 VDC when ignition is in the “ON” position and
while starter is engaged.
Fan Load A This circuit is controlled by the ECM (via relay and fuse) and
supplies as +12 VDC when the coolant temperature reached the target
temperature. Connect to +12 VDC terminal on cooling fan “A”. Ensure
the fan is properly grounded.
Fan Load B This circuit is controlled by the ECM (via relay and fuse) and
supplies as +12 VDC when the coolant temperature reached the target
temperature. Connect to +12 VDC terminal on cooling fan “B”. Ensure
the fan is properly grounded.
Fuel Pump Load this circuit supplies +12VDC when ignition is switched
“ON”. Connect to +12 VDC terminal on the fuel pump. Ensure that the
fuel pump is grounded.
Tachometer Connected to input on tachometer. Refer to gauge mfg.
information to ensure the tachometer is set-up for V8 operation.
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