Ωhm

Ship still stuck.

Radio/LCD clock illumination relay

TPS closed throttle voltage is a static test, used for adjusting TPS. TPS might have a flat spot (1500_2000rpms). Dynamic test requires moving TPS slowly between its lower and upper limits looking for any faulty spots. This type of testing would need analog voltmeter. Some DVOM have a BAR meter under the numeric display and read voltage 10 times faster than the numeric display. Could possibly find your flat spot there, if one does exist.

Flip your grille, its upside down. Its a MJ known issue.

Did you find the connectors D1 & D2? D2_4 pin is IGN SW feed (I1). With DVOM connected between D2_4 and Battery GND, KEY OFF, your voltage reading should show 0vdc, otherwise your IGN SW (I1) feed is shorted to voltage (B+).

With ENGINE RUNNING and KEY OFF. Measure for B+ at D2_4. Should show 0vdc.

Find that single red wire and make sure its not plug into anything except the Engine Compartment Lamp, if equipped. Wire is HOT at all times.

Double check it.

With KEY IN ignition switch wiggle it. Any slop? Is there extra weight on your key chain?

Swap your relays around with one another. Checking for bad fuel pump relay.

Can you keep it running with say starter fluid or gas?

Did it ever run good with the new CPS?

MS1700 is a tester and the other is a diagnostic manual. Probably Ebay only items. Pin wires for continuity from point to point and do what @cruiser54 saz. Might have something under the DIY section.

On NIT's website, under TCU Datastream, he show ??? two times. One IDK and the other when Torque Converter_(S3) is FALSE. Could be a good starting point. NickInTime (NIT)

_mj1988electricalmanual_1.pdf

A pump can be deadheaded for short periods of time, especially if pump has build in slippage (re-circulates).

and require a fuel return line. Do carbs require a fuel return line?

Jet Stream stuff, even though I'm not sure what it means (more predictions), can be some kind of early warning system. https://weatherstreet.com/models/gfs-jetstream-wind-forecast.php

Is this bootleg stuff?

Well that make's it simple. I can understand that.

https://www.ebay.com/itm/Jeep-Comanche-Logo-Decal-Sticker-7-Length-/333659118584 Where does this logo go?

Should be shielded wire for the Knock Sensor (KS) signal. Can't tell from photo, but do two (2) wires go to the connector? Note tin foil type stuff wrap around wires, that 3rd wire should connect that shield to ground. Purpose is to prevent electromotive force (EMF) from outside sources riding on the KS signal wire causing a false reading. If you can read continuity to ground on that wire your good to go.