Page 14 of the Kohler Engine Accessories Catalog (Form No. E-1953-L) shows all the electrical terminals and connectors Kohler uses. It's not viewable online but if you'll email me with your email address, I can Attach a copy to my Reply. I keep stock on many of these components -- very handy.
On page 10 of this Kohler Catalog, it shows their Crankcase Vacuum/Pressure Gauge as well as some other testers you might be interested in.
And...at last year's Technical Update Seminar, Briggs & Stratton came out with Engine RePower Kit P/N 19615. It's a 32-section, 12" x 18" x 3" compartment-style box with 27 sections already containing electrical components -- terminals, connectors, insulators, etc. Five sections are empty for your own special needs. This 780-piece Kit sells for $125.00 (Special at the 2011-2012 Update only -- $75.00). If your local dealer has one, you can get the part numbers and descriptions of all the electricals in it. If not, I can take a digital picture of the contents and send that to you as well, if you'd like.
Thanks! Any info would be greatly appreciated, I'll send a message shortly.
Kinda got real busy with life, but I made it back to post a few shots of it actually done.
Finished panel with throttle lever installed, had to lose the knob for clearance with the handle.
Lugs for external power hook-up as needed plus cable staps to wrap it up neat.
Basic set of wire clamps and terminals for the briggs 16hp vanny.
Found some terminals from molex connectors for computer power supplies work for the briggs round pin terminals.
Tried it out a few times, works great. Going to make-up some clamps to add on to the ends of the pos and neg cables for the times I don't even want to disconnect the existing ones. Already started to collect a few items for version 2, bigger with more gauges.
Thanks for lookin! -- now off to do some spark plug research...