1999-2005 Dodge Ram 5.9L Cummins Low Fuel Pressure Alarm Light Kit
The purpose of this kit is to indicate to the driver with the red/amber LED, if the supply fuel pressure of the VP44 injection pump is dropping below 5psi. Also note that damage may result to the VP44 if it is starved for fuel. If you are finding that your existing setup cannot supply enough fuel for the VP44, you may want to look at some additional kits to protect your system.
On newer ISBe engines the purpose of the kit is to alarm the driver once the fuel pressure drops below 5psi, indicating that an auxiliary pusher pump is needed. For safety anything over about 400 HP will need an auxiliary pusher pump.
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