All of the answers to your questions on the E-24 wiring of the SLS are in the ETM except internal switch wiring. I have a MS Word 98/97 write-up which I compsosed from back articles (June `97, etc.) in the ///M Register -to which I belonged until its demise- and other sources, written by Danial Ma & Pete Reed, Don Schmidek, and others. I have lost count of the number of times I have emailed it to requestors! It is troubleshooting, repair, and technical info. The description write-up given here by Matt Evans compliments these very well! Also don't forget to read the article in the BCG Technical Library on the SLS. It is a nice, but much shorter one.