I agree with all your saying. And as more cars use my new unit and hours get racked up running it there may turn out to be a design change needed. The biggest problem with the old relay design is they use a single sided circuit board and the heating and cooling of the unit is breaking the solder joints on the relay to board. My new board is double sided epoxy glass, 2.5 oz copper with plated through holes. This alone would fix 90% of the old unit failures but why stop there? The MOSFET drivers guarantee the resistance of 0.003 ohms turned on will always be that value. A new relay has similar resistance of the contacts but quickly increases with use (switching inductive loads is hard on relay contacts). Time will tell. Won't it be nice not to have to carry a spare RPM relay? --- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@...> wrote: > > It's not just the transistors, it's the wiring, the design of the > circuit, the workmanship, etc. I bring this up because we all know how > how notoriously unreliable the shift computer is. [moderator snip] ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/