Ωhm

The ECU (KEY ON) controls the Fuel Pump Relay and NO, I don't think the short is before the relay. Need visual inspections of the following: Disconnect Bulkhead C100 (Engine Harness to Instrument Panel Harness). Backside of Fuse Panel. Both ECU connectors. Was this vehicle ever driven underwater?

Remove Fuel Pump Relay. Determine if fuel pump still primes.

Let's define "primes my fuel pump". Too me, that means fuel pump ON for 2-3 seconds, then OFF. This primes the fuel rail with pressure. Is that what your seeing or is fuel pump just ON?

With PARK fuse installed, Headlights ON, does turning the DIM knob, control the fuel pump motor?

Remove HD LP DLY fuse. Does fuel pump run when headlights are ON? Does engine START, RUN and shut OFF?

Did vehicle always have this problem? Is it something new or just discovered? Is vehicle equipped with Headlight Delay Module? Does it have a HD LP DLY fuse?

Thanks

If your looking for natural wonders, Bay of Fundy in Canada (New Brunswick, Nova Scotia). I must say its a sight to see so much water move in and out of the bay daily.

Can you tell me what cavity that TAN/BLK wire goes to or can you take a photo of the end view (looking at it)?

The only thing I notice, on the Power Distribution page of the 88ElectManual, is each fusible link has both a color and a gauge value posted next to it.

True. Seems to be a tough question to answer. Go low and work your way up.

That's fusible link F. Could it be fusible link H?

Isn't that ORG fusible link? Which fusible link was blown?

During engine CRANK (starter relay engaged) the ORN/BLK becomes HOT and bypasses the ballast resistor for straight 12vdc to the fuel pump.

Fuel pressure numbers seem good allowing for a little slop in the gauge. Ideally would be 39psi at KEY ON and 31psi at IDLE. Maybe time for a secondary tune up. Plugs, wires, rotor and distributor cap.

Can this VIN decoder help. Jeep VIN's are on the bottom? https://vehicleidentificationnumber.com/vin-decoder/jeep-truck.html

I keep my music on a stick drive. https://payplay.fm/

KEY ON or KEY ACC. Does the Horn and/or Wipers work?

With fuse installed, does Blower fuse (25A) have B+ on both sides? KEY ON or KEY ACC.

Try with the key in the ACC position.

Assuming your not running fan current through the switch, your wiring seems to be correct. NOTE: Ground coming off of the switch is solely for the Fog Lamp ON indicator. Determine if the 'ON indicator' is the source of the heat by disconnecting the ground circuit on the switch.

RENIX Engine Monitor (REM)

Short bed, w/stick, w/4x4.

$32.00 for Tech:906 using toilet paper. That's outrageous.

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