I don't have diagrams for the vans...... Having them sure makes your life easier though.

Reconnect that ground, and see if it runs any better. If the pump does good working off a motorcycle battery, I would really suspect that you have a wiring issue, more than a pump issue.

 

That's a weak spark, the spark should be a strong blue color. Perhaps the ignition coil is weak.

 

Good news! It was all my fault. While measuring for the new floor I'm putting in, I removed a ground wire that was connected the bottom of the interior rear wall... guess what that grounded! The fuel pump!
Oh boy, I feel like a total dunce, but damn if I don't know a hell of a lot more about this van that I did a week ago. Especially thanks to you guys. Really appreciate the support. Thanks!

I'm replacing the filler tube grommet while the tank is out and also getting some rust under the van cleaned up. Unfortunately, it looks like my rear differential is leaking... and my exhaust is rusted to hell. No holes yet, but just a matter of time. Time to start researching these things!

 

What's weird about that is in your first post you said, "I can smell fuel when I pump the gas pedal and seems like it floods." So I'm scratching my head while wondering how there could've been fuel if the pump wasn't running?

 

That's a good point and my dad also said he smelled fuel... hmm... I guess I'll keep an eye (or a nose on it) moving forward!

 

Silver lining is I now know my fuel system ground location and can possibly handle a fuel system repair now that I know the process. A reminder that stress can be positive! Thanks again for the help!

This is just my experience and I am not a trained mechanic. Please take no risks when working with vehicles or when fuel is involved. Be safe!

Summary of what I learned on a Dodge Ram 350 Van (1994)

• Removing the dog house. Just two unsnappable hooked clips on the back along with four removable (phillips screwdriver) base mounts. Mine was missing a couple of the base mounts, but was held in place fairly well. You shouldn't struggle with removing the doghouse. It should pull out easily. Use your cup holders as a handle to pull on and they might simply snap off, like mine did.
  
• Under the dog house cover is your top-end with a large round air filter housing blasting into 8 cylinders. Your going to see 4 spark plugs on each side, right below the fuel injectors. Everything seems easily accessed on this van. This gives me confidence taking it on the road. The distributor is right up front and coils are easily removed from spark plugs with a strong pull. Removing the gas tank. Open gas cap and remove three (phillips screwdriver) screws. The filler tube has a nearby breather tube. The breather tube needs to be removed from under the van after the tank is lowered. Then the entire breather tube assembly will fall loose. I noticed that the round donut looking piece between the breather tube and the tank (filler tube grommet) was falling apart. I ordered one online. I read that these can be a minor struggle to install on the breather tube side, so I'm not missing morning meditation that day for the sake of my neighbor's peace and quiet.
  
• With emergency brake on and blocks set for added safety, remove two metal straps holding tank horizontally (13mm). You will only need to remove nuts on one side of the strap. The other two can be unhooked after loosening. The tank's vertical strap (that runs the width of the van) had a larger (14 mm) nut.
  
• Place a small piece of wood (maybe 2x6) between the jack and tank, then jack it up to lightly nuzzle the bottom of the tank. Then stabilize the tank. Remove straps and stabilize tank as it lowers onto the jack. Begin to lower the tank. If completely removing the tank, lower the jack all the way down and stabilize tank. Be careful because the breather tube may be loose and gas may spill if your tank is not empty. Remove the electrical harness on the fuel pump (flathead screwdriver) Careful, don't want to get to learn wiring too. There are also two small breather tubes to remove from their attached T connectors. I was gentle, as I don't know how old and therefore brittle these might be. Finally remove the fuel line connector. I read that there would be a plastic connector piece to pull off. Mine didn't have this and simply pulled loose with some effort.
  
• Fuel lines run on the passenger side of the van from fuel pump, up under the transmission, through the dog house, up to the fuel rails and into the fuel injectors.
  
• Fuel Pump Relay and Auto Shutoff Device (ASD) Relay are under the hood and to the right. Orielly's had these two relays as a pair only, but autozone has just the Fuel Pump Relay. They are interchangeable, but the van side connectors were shaped differently to try to prevent mix and match. I was able to fit them in on one side with some effort. On my van they were connected by a metal bracket tucked way deep behind the battery through a nest of connectors and wires. There is no Power Distribution Center, at least not an actual PDC box on this van. There may be a number of fuses there somewhere in the mess; I did find some behind the brake pedal along with another relay.
  
• And most importantly... the ground wire for the fuel pump (what else tho?) is attached at the base of the rear wall, to the right side of the door, when looking at the van from the rear.