Rob;

I have also posted this problem to the (German) Volvoniacs Forum(http://www.volvoniacs.org/forum/thread.jsp?forum=31&thread=3879)...they have some very capable electrical specialists, and also some people who are also very experienced in 544s (I"m not)...perhaps between our two Forums (Fora?), we can come up with a solution of use to all. I've already learned from them, that the 544 never had a two speed wipermotor (stateside owners can please confirm this), and that the Green wire connects to a "brake" of some sort when the switch is in the OFF position...when ON it is disconnected (at the switch) from the Green wire...I was definately told it is not possible to control a 544 motor with a 122 switch! (...which doesn't mean its impossible, it just means this is not simple, and is going to be a bit of a challenge!)

I suggest you first try to determine the internal wiring of the 544 motor by taking it apart (obviously, as little as absolutely necessary) determining which wire needs power for the motor to operate, how the "park" switch is incorporated, what this "brake" is all about (it could just be a dynamic brake, effected by grounding armature), and posting this info...that would help a lot!

In the meantime, I have put all I have been able to definately glean from the manuals into one drawing. See: http://www.intelab.com/swem/wiper_circuits_544_122.jpg
What I can state with certainty, is that %44 terminals P and 54, are equal to 122 terminals W and P, respectively...but that is fairly obvious and of little help...

If anyone out there has a (numbered) 544 switch that they are willing to subject to an invasive, but nondestroying internal inspection, that would also be a big help.

Cheers from a very rainy Hartford (wipers on high speed today...intermittent setting useless!)