2000 ford windstar... electrical mess!!

If the speedometer does work, but the odometer doesn't work, then you have a bad speedometer head assembly. The speedo head is a microprocessor that gathers the info coming from the vehicle speed sensor and translates it for you on the speedo and the odo. If one is working, but the other isn't, then it is getting the VSS signal, it just isn't processing it right. You could also be experiencing the below issue: The Brake Pressure Differential Deactivation Switch (SCDS) (2B264) located under the Master Cylinder (Behind the Air Filter) over time develops a leak. This causes a short and a fuse trip, fuse #10 if the engine is on. This leak also causes brake fluid to wick down two wires to the ABS brake module (2C219). The fluid accumulates on the (always on) power connectors for the ABS brake system which are powered by fuses 101 and 102 and are both 40 amp. The fluid attacts moisture, road salt and leads to a fire when the fluid and moisture act as conductor between the hot leads and ground. This switch has been the subject of other Ford Recalls, just not the Windstar van yet. Below is a picture of the switch in question. Notice the fluid that leaked on the part below it. This switch will cause cruise control problems, speedometer, odometer and ABS brake system problems.

If the odometer doesn't work, then you have a bad speedometer head assembly. The speedo head is a microprocessor that gathers the info coming from the vehicle speed sensor and translates it for you on the speedo and the odometer. If one is working, but the other isn't, then it is getting the VSS signal, it just isn't processing it right.
You have to replace the brake light switch(It would have been wet with brake fluid from having done brake jobs)

thats odd. Adding brake fluid shouldn't have kicked on the ABS light..

Low brake fluid would cause your RED parking brake light to come on not the orange ABS light (unless thats what you mean. if thats the case its normal for that light to come on with low fluid. in this case check the brake lines starting to the master cylinder and the components at the wheels to make sure there is no leaks if you go HERE complained about your situation and also noticed a leak on the bottom of the master cylinder (hazardous in more than 1 way) )

not sure of the component locations under the hood of the windstar but check to see if you were bumping wires on the ABS control module when you were putting brake fluid in. may be a loose connection that jiggles loose when you drive.

otherwise it might need a new ABS control module or maybe moisture in one of the components.

could be the cruise controle sensor under the brake resavore the bracke fluid eats away at the plastic houseing and causes a short

it could be a bad fuse, but is most likely a problem with your abs system.

Ford has a recall for this problem.

Do you mean the van is actually braking like a Starsky and Hutch move or that the warning lights indicate that they are on? If its lights then you may be low on brake fluid. Maybe a module leak

The ABS light is coming on because the Red brake light is on. This is the saftey feature built in. The ABS will disable it self if red light is on. You are either low on brake fluid or the float is sticking in the master cylinder reservior.

You may need to make sure that Ford Factory pads have built in sensors on them. In many vehicles these built in sensors will cause the abs and brake lights illuminate when the brake pads wear down to a certain point. Also make sure to check your brake fluid regularly. I used to work for a Infiniti dealer in the service dept. When the brake fluid was low it caused the brake lights to come on as well. Just a few things you can check out yourself before taking it in to the dealer to check for codes. 

check the relays in the fuse panel