Ah! Glad you got bit sorted ... It's a motor I'm after.

Motors from other models may have a different compound linkage and wiper
arc.
Try E&Mart under Fiat.
Two main problems with motor assys.
Mild steel wiper shaft, in diecast tube, once water gets past the O-ring seal
it corrodes up solid. Takes ages, and major dismantling, to free it up again.
(and then to remember how the compound linkage goes back together,
plus you need a box of assorted O-rings). Silicone grease seems best for
a cleaned up wiper shaft.
Slip ring contacts lost their tension, you can usually take the cover plate
off, and see the fingers and slip rings. Motor can be taken off with a
couple of screws, don't go any further by trying to dismantle the motor,
once the carbon brushes spring out of the brush boxes you are in
trouble, but you can (if it needs it) lubricate the front worm gear end
bearing, use a synthetic oil if available..
Usually the slip ring finger contact block comes off with a couple of
bolts, you may only have to clean the slip rings with cotton buds,
and bits of kitchen roll held in surgical seizers.
Re-lubricate the slip rings (Vaseline is good) gently re-tension
the fingers, and re-assemble. Don't overtension the fingers or they
will wear rapidly.
If the wipers dead you have nothing to lose, you can always re-asemble,
and put the dead motor back, while you source a replacement.
It's fairly rare for the windings to burn out even with a stalled wiping
action, the motors are faily robust, the may get hot and smell, but
once fixed usually work as good as (rip-off priced) new.