Hi Scot Sounds like the prom in the ECM used in the 305 Ho motors. I believe some of the pins are reversed from standard. I had to look it up in some "ancient" motorola data books. I will try and get you the pinout if you want. CU:peter >It has no quartz window..... > > >Thanks, Scot Sealander Sealand at clarityconnect.com > >