2008 mastiff
New Member
any one know about the 4 wires from fuel pump goes to what wires. the connector has completely broke off
2008 mastiff efi
- Thread starter 2008 mastiff
- Start date
Jersey Big Mike
100K mile club
Yellow/red i suspect is power
Black and Brown are grounds (pump and the thermistor used as low gas sensor)
grey I expect is signal from the thermistor.
Schematic in manual shows the wires as Black & brown ground, Red is pump power and white is signal
You do have the manual don't you?
Manuals -> https://www.dropbox.com/sh/4342373flodnbhj/AACDvhA93EOHPPKCs2gYPQDPa?dl=0anualsan
Black and Brown are grounds (pump and the thermistor used as low gas sensor)
grey I expect is signal from the thermistor.
Schematic in manual shows the wires as Black & brown ground, Red is pump power and white is signal
You do have the manual don't you?
Manuals -> https://www.dropbox.com/sh/4342373flodnbhj/AACDvhA93EOHPPKCs2gYPQDPa?dl=0anualsan
Jersey Big Mike
100K mile club
Using a DVM you could verify this.
Resistance across motor/pump will be low
Resistance across thermistor is likely to be 100K
Grounds are not connected till they are plugged in.
You can also disconnect the little plug on the end of the fuel pump and see which wires are the pump to verify.