[Eric B]

Hello TJ

The closest WD number I could find is CM4233328 which was on SN173194

In Canada SN 171224 had DND number 35-804
" 171202 " 61-438

These numbers are not related to the vehicles SN and were not assigned in chronological order pertaining to the vehicles serial number.

There are 2 styles of electric wiper motors. One with 1 power plug while the other has two. Either one will work. The proper one has been debated. There is no doubt the single plug is contract 241/242 but there is a possibility that the 2 plug was used on contract 505 as the 2 parts manuals show different part numbers. These were also used on other vehicles, so you must check the shaft length, the wiper arm attachment style and the voltage.

There are some very nicely restored CDN Contract 242/241 and 505 MB's. They are good for reference points as they were the same other than the data plates and of course the manufacture changes in production.

If you wish to portray a specific units vehicle, which you are. Sometimes you can find WD numbers on their war establishment lists on the Canadian Library and Archives web page. It takes a bit of searching and may not turn up anything.

Thanks
Eric