Ωhm

Pin_B goes to the grounding side of the brake bulb in the IP cluster. Pin_A connect to the grounding side of IP brake bulb through that bonding strap, but circuit continues to IGN SW_G1 (bulb check; G1 to ground) or Park Brake Switch (to ground). Any one of these three things when grounded will turn IP brake bulb ON.

Looks like switch ties two wire together internally. A$$umption based off 88 Elect Manual.

Could be a fuel return line leak, if you have a leak at all. 110 - 115 LTFT shows your running rich and ECU is leaning INJ PW, but well within its range of authority.

Loss of fuel between tank and engine is never seen by the O2S.

All mentioned parameters (REM) seem to show vehicle in running as it should. Possible fuel leak between tank and engine would cause loss of MPG's.

Since the two pin switch ties the wires together internally, can't you just tie the wires together externally and use the single pin switch?

Yea, the unit of resistances. But when it comes to quitting cigarettes, I show continuity to ground (0 Ω's). Best I can do is quit every night (no joke intended here). Their my lungs, they don't belong to the tobacco company.

My attempts at quitting has always ended in failure. I'm still good for a pack a day. I did learn one thing though, quitting is a two step process. First step: Quit your own cigarettes. Second step: Quit other peoples cigarettes.

IGN SW terminal A is both hot in RUN and ACC. This is the feed circuit for your components listed above. If components work in ACC and don't work in RUN, suspect Ignition Switch.

Do any of these work properly when the key is in the ACC position? Does your horn work?

Lets see if any improvement occurs. Something is giving you that 'strong gas smell at start'. Could be no spark.

Hold the throttle wide open and to the floor during CRANK. This condition is known as "clear flood" and shuts off the injectors during CRANK. Quick way to check for leaky injectors.

Check the spray pattern of the injector using a flashlight. Spray pattern should be cone shaped and fine mist (no fuel droplets). See if pattern changes when vehicle runs poorly.

Heavy Duty Sewing Needles w/twine (leather/tarps).

Good the MJ is back on the road again. Welcome to the club.

Is it the fuel pump handle at the gas station(s) clicking off, telling you when your tank if full? Maybe the tank isn't full. Internet makes mention of faulty filler tube (restricted) or EVAP system is plugged as causes for kicking of the fuel pump handle.

Sorry about WOT (Wide Open Throttle). Low vacuum conditions. Its not the fuel canister. Not sure of location on the 91's. Anyone?

Source vacuum (engine manifold) is stored in the reservoir w/check valve. When vehicle is under low vacuum conditions (ex: WOT), the reservoir maintains vacuum for any and all vacuum operated actuators. I think its located behind the front bumper.

In one or more of the positions you might hear a hisssssss. Might take a young ear to hear.

Can you start the vehicle and cycle the AC/Heater Control head through its different position while listening for a vacuum leak from the AC/Heater head? Possible plastic nipple has broken off.

Check the fuse again.

Add, are the license plate lamps ON?

Cluster voltmeter uses C203_6 (12vdc) and C203_10 for ground, while the ALT lamp use C203_6 (12vdc) and C203_3 (Tan w/tr) for path back to alternator. When alternator is faulty, C203_3 (Tan w/tr) should supply ground leg and turn lamp ON. However this vehicle is voltmeter equipped. The reason I mentioned "its just an extra wire" is because it terminates nowhere with GAUGES/HI LINE clusters. Refer to 88 Elect Manual pg 96 (Instruments Clusters).

The slower the trigger wheel spins, voltage (AC) at the CPS decreases. When you jump the battery, does CRANK RPMs increase?

Set multimeter to volts AC and perform cruisers tip. RENIX CPS TESTING AND ADJUSTING