What I meant was that he shouldn't worry about where to connect the wires. As long as he used the common terminal for one of the wires he will figure out which other terminal to use. Obviously it has to be either the NO or the NC terminal (I wasn't going to make it so easy for him). If he took 5 minutes with a multi-meter he wouldn't have had to post the question in the first place. Sometimes giving the direct answer is not the "best" answer. Anyone working on a car (including Deloreans) ought to get to know a multi-meter and how to use it. Then maybe he might be able to tell if the old switch was really bad before he ordered another one. You are correct that it is a simple single pole double throw switch electrically and it should be wired to the NO terminal and the common. In any case he should check the old one and after installing the new one it too should be checked. Sometimes even when a micro clicks and you think it tripped inside it may be bad and not make contact. The only way to know is with a multi-meter. One of the causes of a bad micro is hitting the switch too hard with an out-of-adjustment screw. It should just trip the switch and then maybe a 1/4 turn more. Another cause is tightening the hold-down screws that fasten the switch to the bracket too tightly. This type of micro is rated for cycling in the millions, they generally last a long time if installed properly ( they do fail though but not frequently). David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, Martin Gutkowski <martin@xxxx> wrote: > > David Teitelbaum wrote: > > >However you hook it up when it is at idle and the throttle hits the > >micro switch you should have continuity. Don't get too hung up on NC > >and NO. > > > ????????? It's a Single-pole, double-throw switch, you have to use the > NO and common pins for it to close when the throttle arm hits it. I've > worked on an engine with a Volvo type switch and it took a while to > track this problem down > > Martin 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/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> 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/