To tach or not to tach
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=87402
Printed Date: May 07, 2025 at 2:49 PM
Topic: To tach or not to tach
Posted By: jaurora
Subject: To tach or not to tach
Date Posted: December 18, 2006 at 10:54 AM
That is the question! just wondering on what you installers use/prefer. Do you do with the tach mode or voltage sensing? ------------- MECP certified (If it really means anything)
Jeremy
Replies:
Posted By: ers1121
Date Posted: December 18, 2006 at 11:17 AM
I usually go tachless, I have only had one that gave me a problem and had to hook up the tach. Although when I run the hood switch wire I usually bury the tach wire under the hood just in case.
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Ed
Posted By: kgerry
Date Posted: December 18, 2006 at 2:05 PM
i almost always tach.... maybe 5-6 voltage sense in 1000+ starters....
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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: Twelvoltz
Date Posted: December 18, 2006 at 2:50 PM
For me it depends on the vehicle....A newer GM truck, where the truck takes over the cranking, I see no need to run a tach wire. Most vehicles get a tach connection, to ensure longevity but some just do not need it.
Posted By: stick42
Date Posted: December 18, 2006 at 5:08 PM
For reliability etc.. you can't beat a tach source. What's the extra few minutes to hook it up if it means a customer not coming back or having problems.
Posted By: megatfauzi76
Date Posted: December 18, 2006 at 6:52 PM
Meaning, Tach wire more effective compare voltage check rite? Coz my car they not install the tach wire... Do you think this make me facing this problem? Autostart fail to start my car...But my signal light blinking show like my car already start...I wait 3 minutes...The light still blinking...But autostart not try to strart again....Any idea why?
Posted By: hafr
Date Posted: December 18, 2006 at 7:54 PM
Here in NY I like to use a tach wire on every car. We do onsite installations and don't want to have to go back to turn up the cranktime.
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Rich Hawthorne
Hands-Free installations
"don't talk with your hands full"
516-no-hands
Posted By: wiretapper
Date Posted: December 18, 2006 at 8:14 PM
Twelvoltz wrote:
For me it depends on the vehicle....A newer GM truck, where the truck takes over the cranking, I see no need to run a tach wire. Most vehicles get a tach connection, to ensure longevity but some just do not need it.
Exactly.
Posted By: au5599
Date Posted: December 19, 2006 at 11:49 AM
tach is more reliable
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Street Dreams Car Club
93 GRAND CARAVAN SE / Astro
Team New York SS3-4 06 & SM3-4 07 DB Drag World Finals
2003 Chevy Suburban LT / 98 GTP
Posted By: azn_fcuk
Date Posted: December 19, 2006 at 12:04 PM
the 06 Dodge Rams, i usually go tachless, the ECU is a PAIN to get at.
Posted By: brandon@truckou
Date Posted: December 19, 2006 at 7:09 PM
In all the years I've been doing RS's, I've never had to use tach. We use Directed and Omega (MARS) and I've never once had an issue using voltage sensing.
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