Acquired a 1988 240 wagon with non-functional windshield wipers...

1) The fuse (#2) blows the second the key is turned at all no matter the position of the wiper switch.
2) Unplugging the wiper motor the fuse will not blow and the horn is functional.
3) New wiper motor in the last year with a good ground, and the wipers are free to move (not seized in place).

Voltages are all normal (yellow always 12V, brown 12V only on low, green 12V only on high) except for the white/black which is a constant 2V (not a typo, only 2V) even if I unplug the relay...

Any suggestions on where to look next?

 

Looks like a bad wiper motor...

 

Okay, bench tested the motor and you're right, it's bad. Ordering another as we speak...

Any idea what's going on with the intermittent wire drawing only 2A? Especially because unplugging and replugging the relay has no effect? A short somewhere?

 

Hard to say. Change the motor first, go from there.

 

I have the same issue the fuse blows once i put the wipers on low without the relay i can use the wipers on high but they are very slow i got a new motor and its still blowing the fuse
SOLVED
so someone before me had put the wires in the wiper motor connector wrong so i swiched them in the right places and it works