Bad battery?

Battery load test and check all the fluids and also test the ignition switch/transmission range switch/neutral safety switch, starter relay, and starter. These guides can help us test the battery and then replace it if necessary.

https://www.2carpros.com/articles/car-battery-load-test

and

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Please run down these guides and report back.

Charge your battery up fully start and idle the engine get a multimeter hook it up to the battery cables turn on the a/c head lights now what does the voltage on the meter read?Lets start with that.

The battery is fully charged and the engine is turning over full speed?If so do you have spark any codes?

Do you have any spark or any codes?

What does "still nothing" mean? Does "no power" mean the dash, head lights, and/or interior lights are not working too, or is it just the starter system that is not working? If it is just the starter system, have you used a scanner to view the state of the transmission range switch, (aka neutral safety switch)? If it has a problem, you may see all the shift indicator lights lit up on the instrument cluster.

You need to list the correct engine size. There are multiple V-6's and they have very different wiring diagrams.

Do you try to jump start? Or take battery to auto chain store for free recharge and condition check?

If you have to keep replacing the battery, then it isn't getting a complete or consistant charge from the alternator. Just because the alternator is good and the cables are clean and tight doesn't mean there isn't a problem.

You need to use a volt meter to test each cable for high resistance or a break. Also wiggle the cables while testing because a small break or corrosion in one of the wires may test good now but while driving the vibration will open the break. Don't forget to check all positive and negative cables from alt to bat, bat to frame, engine to frame.

Particularly pay close attention to the main positive cable from the alternator to the bat. Test voltage flowing from alt to bat while engine is running. You should get at least 13.5 volts. Shake the cable while testing.

Can you describe what the light looks like? I just ran out and looked at mine, and there's no red light. The right switches are "rear washer", and "rear wiper" side by side, "overdrive off" under it, and "rear defroster" under that. The two bottom switches have yellow indicator lights. Both of those should go off when the ignition switch is turned off.

The front wiper is part of the turn signal stalk.

Caradiodoc

That sounds like an LED and is not factory original. Look for an aftermarket anti-theft system. Some systems have a disarm switch mounted below the steering wheel, and some have a switch added under the hood to detect when the hood is opened. I'm not familiar with how these systems work, but if you see a speaker / horn under the hood, that will be your proof of an aftermarket system.

So do I understand your front wipers are not part of the signal switch? The van I looked at is a '95 model, but I worked on lots of minivans at the dealership, and I don't remember a front wiper on the dash. Doesn't mean they didn't; I just dont remember.

Caradiodoc

Let me clarify my earlier statement. Some anti-theft systems have a horn-shaped speaker under the hood. They are not the same as a standard horn. There's no speaker under the dash but the custom add-on systems could have a switch to turn the system off. That switch, (if it even exists), could be hidden anywhere, but under the dash is a common place because it has to be convenient to reach.

If there is no add-on anti-theft system, I can't imagine what that red light would be for. LEDs draw such little current, it alone would not kill the battery for many months.

On a related note, my mother had a dead battery at least four times with her '95. Every time, after jump-starting it, I found the left overhead light turned on just behind the mirror. She never knew they were there at first, and claimed to never have used them. I never figured out if she was bumping it while hoisting her purse out or whether a plastic latch was deformed and letting go. She never noticed it coming on at night by itself, but I did see it turned on once myself. It's worth looking at if you have those lights in the overhead console. That light can kill a battery overnight.

Caradiodoc