Author	[Modern View]
Krwkmt 08-23-2012 17:55:45 166.147.121.147 Report to Moderator	Any instructions on how to get a digital temperature gauge to work on a 12 volt 8N The gauge is inoperative when motor is running as if the ignition system is back feeding into it [Reply]   [No Email]
Dell (WA) 08-24-2012 09:42:49 63.226.209.134 Report to Moderator	Re: 8N digital gauge in reply to Krwkmt, 08-23-2012 17:55:45   Krwkmt.......surprizingly enuff, digital gauges don't like sparkies. And without sparkies, guess what??? Engine NO RUN. And even worse, yer 8N's weaksister ignition needs COPPER-CORE sparkie wires which generates sparkies to kill yer digital meter. While you "might" gitt some sparkie relief iff'n you use modern resistor carbon-core sparkie wires, it is NOT RECOMMENDED. Me? I use a tube operated mechanical temp gauge from Stewart-Warner (print matches other gauges) and the sparkies never bother it. ........mechanical Dell, retired electronics engineer [Reply]  [No Email]
MarkB_MI 08-24-2012 02:05:51 75.241.116.92 Report to Moderator	Re: 8N digital gauge in reply to Krwkmt, 08-23-2012 17:55:45   That's just wrong! You'll probably need to replace your plugs and/or plug wires with the resistor variety. You can try filtering the input by adding a capacitor between the input and ground as close to the gauge as possible. A second capacitor between the positive and negative power wires is a good idea, too. [Reply]  [No Email]
oldtanker 08-23-2012 21:07:58 66.228.255.239 Report to Moderator	Re: 8N digital gauge in reply to Krwkmt, 08-23-2012 17:55:45   How man connectors on the gauge? If it's 3 like mine then one is power from the switch, one is ground and one goes to the sender. Plus you may have a couple for a light in the gauge. Mine is an electric gauge but it is anolog. If it's hooked up the way it's supposed to be then I would guess interference. Rick [Reply]  [No Email]
Dean 08-23-2012 18:11:07 152.216.3.5 Report to Moderator	Re: 8N digital gauge in reply to Krwkmt, 08-23-2012 17:55:45   Most likely digital circuitry cannot tolerate the RFI interference from the ignition system. Are you using TVRS or coopper core spark wires? Dean [Reply]  [No Email]
Popinjohn 08-23-2012 18:05:57 24.168.43.43 Report to Moderator	Re: 8N digital gauge in reply to Krwkmt, 08-23-2012 17:55:45   Isn't it like any other gauge where you have a 12v power source wire, and a wire coming from the sensor in the water jacket? If it is backlit, maybe a wire connected to dash lights for illumination? Do you have other things connected that shouldn't be? Also, you didn't say if your 12v system is negative or positive ground. [Reply]  [No Email]
Krwkmt 08-23-2012 19:12:39 166.147.121.161 Report to Moderator	Re: 8N digital gauge in reply to Popinjohn, 08-23-2012 18:05:57   Negative ground [Reply]  [No Email]