Tom, The switch with 3 terminals is normally a SPDT ( Single pole Double throw.) The center contact would be common either hot or ground ( normally Hot ) and the others would be what you want to turn on. Meaning you would be directing the hot wire to the load. OR, the switch could be used to just break the connection when the load is already grounded. Call if you need further information. John Hervey www.specialtauto.com -----Original Message----- From: Tom Watkins [mailto:dmctom@xxxxxxxxxxxxx] Sent: Monday, March 29, 2004 6:56 PM To: DMC News Group Subject: [DML] DMCH on/off switch I have a question for anyone who has bought these from DMCH. The on/off switches have 3 prongs on it. I was going to use this as an in-line on/off switch for my installed flux capacitor that I bought. Can I use this switch with only 2 wires? If so, which prongs would be the ones to use? I assume one is a ground but I would not need it as the unit will be grounded to the battery. This would be the same situation with the other switch as it will be used as a manual over-ride for my automatic antenna. My radio doesn't lower the antenna when listening to CD's so I have a switch hidden under the drivers knee pad. This is a auto parts store 2 prong switch. I want to replace it with the DMC switch so I don't have to fumble around looking for it. Yes, I did ask DMCH, Warren wasn't sure which prongs were which so I figured I'd ask any of our resident experts out there. Thanks Tom #05732 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 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/