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Hewitt Engine Control Multi-Alarm IV Module Kit 12V - 191-500    Cars & Vehicles    Autos & Motorcycles    Parts & Accessories    2SQ41W   

Hewitt Engine Control Multi-Alarm IV Module Kit 12V - 191-500
PRODUCT FEATURES: Alarm with 30 seconds delayed engine shutdownEngine protection against high coolant temperature, low coolant level and low oil pressureLow cost and easy to installExisting switches can be usedWarranted for 3 years regardless of mileageNo limit to useful lifeMulti-Alarm module with penetrating audio alarmUtilizing advanced processor controlled timing functions of extreme reliabilityA light display indicating each alarm function and electrical wire harnessTemperature / pressure switches and coolant level sensor must be specified separately as requiredPRODUCT SPECIFICATIONS:Hewitt Part No.: 191-500Voltage: 12VCurrent: 250mA Maximum Plus load current. 7.5AMP fuse required on power input.Signal Output: Alarm signal rated 7.5Amp total non-inductive or 4Amp inductiveOperating Temperature: -40°C/+85°C SYSTEM FUNCTIONS:When ignition is first turned on, system self tests for three seconds indicated by audio alarm and all lights flashing, followed by alarm with corresponding low oil pressure light until engine is started and oil pressure rises.Should an alarm occur on low oil pressure or high coolant temperature, the audio alarm will sound with corresponding light for thirty seconds followed by an engine shutdown. On low coolant level, the alarm is delayed by eight seconds to assure accurate sensing, followed by a thirty second alarm with light indication followed by an engine shutdown. In all shutdowns the shutdown light and the light indicating the cause of shutdown latch on to indicate the system initiated the shutdown and the cause. The lights remain latched until the ignition is re-keyed.If additional engine run time is required, the circuit allows two 30 second restarts followed by a two minute delay before the engine can be restarted. P/N 030-500 can be used with or without the driver display (P/N 030-601). P/N 030-505 is also available for applications requiring shutdown function on the optional fourth parameter. Transmission temperature, air pressure and hydraulic pressure are some of the options for this circuit. INSTALLATION INSTRUCTIONS:Modules must be mounted inside cab (behind instrument panel), never in the engine compartment.Make all wire connections before mating connector to module.Switch wire connections can be made either on the switch side of existing alarm lights or direct to the switch.Install necessary switches and coolant level sensor.  Two types of coolant level sensors are available, one threaded with 1/4” NPT and one non-threaded expanding type (best for plastic tank or surge tank.)Install wires per color code and diagram insuring good connections and reliable ground.  Do not mate connector with module until all connections are completed!Do not connect to instrument (Gauge) sendersIgnition Switch Run PositionBlack (BLK)Ground (Reliable)White (WH)Engine Run SolenoidBlue (BLUE)Temperature SwitchRed (RD)Coolant Level Sensor Yellow (YL)Oil Pressure SwitchGreen (GRN)Optional Use (Trans. Temp./Air Press.)    Orange (OR)Optional Coolant IndicationBrown (BRN)Battery Direct   Violet (VIOLET)     VERIFICATIONS & TEST:Turn ignition on, alarm will sound with all lights flashing for three seconds followed by oil pressure alarm until engine is started.If not started in thirty seconds, cycle ignition to reset the system.HIGH COOLANT TEMPERATURE AND LOW PRESSURE TEST:With engine running, short either switch terminal to ground, alarm will sound with light indication, ground for thirty seconds and engine will shutdown.LOW COOLANT LEVEL TEST:With engine running, remove wire from coolant level sensor , after eight seconds delay , alarm will sound with light indication, after thirty seconds, engine will shutdown.To restart, cycle ignition. Two additional restarts are allowed followed by two minutes delay.DIAGNOSTIC:Engine will not start:Make sure all connections are fully mated.Check fuse, if blown, check black and blue wire for short circuit to ground.Verify connector of violet wire is fully mated and supplying 12 volts constant power.Verify white wire for reliable ground. (Poor ground may cause false alarm.)Connect jumper wire between black and blue terminals of wire harness.If engine starts, replace module. If not, check fuel shutoff solenoid.Constant Alarm on Low Pressure/High Temperature:Verify oil and coolant level.Start engine, disconnect wire from switch.If alarm cancels, change defective switch.If alarm persists, check wire for short circuit to ground.No short circuit, change module.Constant Alarm on Low Coolant Level:Verify coolant level, fluid must cover sensor completely.Disconnect wire from coolant sensor, remove and clean coolant sensor.If alarm persists, check wire for open circuit (cut or broken wire). No open circuit, change module. COOLANT LEVEL SENSOR INSTALLATIONS: Plastic Radiator / Reserve Tank:Drain coolant from tank. Drill a 3/8” hole to accept sensor.
  • Availability: In Stock
  • Brand: HEWITT
  • Mpn: 191-500
  • Shipping Weight: 0.04
  • Category: wiring-electrical > solenoids
  • Website:
  • Call To Order: 1-800-548-1191

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Name: PartDeal (0) 
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Asking Price: $211.50 US Dollars
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