Fuel pump connection?

Tiny
ETHAN
  • MEMBER
  • 1998 DODGE TRUCK
  • 5.9L
  • 6 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 308,000 MILES
What the wiring digram of each pin on the plug what is hot what ground
Saturday, January 31st, 2026 AT 1:04 PM

2 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 34,415 POSTS
Here's the wiring diagram with the wire colors. The connector for the pump module was the hardest one to find. I'm including a number of other connectors and relays in case you need them. The pump module connector is at the top of the last drawing.
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Saturday, January 31st, 2026 AT 4:59 PM
Tiny
STEVE W.
  • MECHANIC
  • 15,546 POSTS
The 5.9 uses a simple 4 wire system on the pump. The Dark Green w/black stripe on pin 4 is power from the relay, The Black wire on pin 1 is the ground. Then for the level sender you have Dark Blue w/white as the power from the PCM to the sender on pin 3 and the return to the PCM is the Black w/light blue wire on pin 2.
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Saturday, January 31st, 2026 AT 5:04 PM

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