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problem with mercury milan rs


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mobileedgeny 
Member - Posts: 32
Member spacespace
Joined: October 18, 2011
Posted: December 07, 2011 at 2:13 PM / IP Logged  
I've done them with voltage and engine sensing on and its never a problem. you can hook up tach, but its not really necessary. let the car crank itself.
offroadzj 
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Gold spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: June 03, 2005
Location: New York, United States
Posted: December 07, 2011 at 2:16 PM / IP Logged  
The tach signal is used for more than just engine sensing on many units. Granted I can't speak for the OP's unit, but many starters use the tach as an over-rev protection. I've sometimes had to use voltage sensing and yes it does usually work fine... but that doesn't mean its done right.
Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205
Jimmy 2 Times 
Copper - Posts: 67
Copper spacespace
Joined: January 25, 2005
Location: United States
Posted: December 07, 2011 at 3:01 PM / IP Logged  
i don't think the avital 4111 has an engine sensing option. I will try voltage.....and if that fails run the actual tach wire.
I don't think i have used a tach wire in about 3 years, i have been using virtual on every one with out a problem but this is a ford, so who knows....
howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: December 07, 2011 at 5:52 PM / IP Logged  
All the other methods are a kludge, tach is the only proper way to go.
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