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rallye bob · 05-23-2009, 07:45 AM

Thanks Rod;
The instructions state....... NOTE: Playback tachs, and Playback boxes must have 12 volts applied to the blue wire. Recording will begin when 12 volts is removed......

So if I run the blue wire from, 12 v source through a n/o momentary switch, and then to tach.... I hit the momentary switch just before I leave, and the tach starts recording?
This tells me that the "blue" wire only has to see 12 v for an instant.... Is this true?
As you can tell, I'm not much for understanding auto wiring, and I need lots of help simplifying it... :-(
TIA

05-23-2009, 07:45 AM	#1
rallye bob Member Join Date: Sep 2006 Location: Genoa, Illinois Posts: 489 Likes: 9 Liked 6 Times in 4 Posts	Re: Autometer 6871 tach Thanks Rod; The instructions state....... NOTE: Playback tachs, and Playback boxes must have 12 volts applied to the blue wire. Recording will begin when 12 volts is removed...... So if I run the blue wire from, 12 v source through a n/o momentary switch, and then to tach.... I hit the momentary switch just before I leave, and the tach starts recording? This tells me that the "blue" wire only has to see 12 v for an instant.... Is this true? As you can tell, I'm not much for understanding auto wiring, and I need lots of help simplifying it... :-( TIA