JubileeCompact,
Looks like the wiring info is all there for you. I made a note of it too, as I have been doing some of the same...
As far as a cover goes...
Ray's site is:
http://www.telephonecreations.com/ There are emails there to contact him, or utilize the PM feature here on the forum... he has always been helpful and friendly when I have pestered him. I plan on purchasing at least a few of his beautiful 302 covers, and I don't think they're strictly available on ePay, or OPW. I stand by for correction, if, in fact, I am mistaken.
I am also in the 'field-test' stage of making an 'older-looking', wooden 302 subset housing...I have made several, for personal use / friends /family distribution, but not geared up, quite yet, to go public.
Also been making 147x and 173x backboards... Robert, I haven't forgotten you; just been blinkin' cold in me motor garage for awhile :-) 5-7" snow on top of 1/8"+ freezing rain/ice today tonight.
More to come...