This is topic HELP ON TACH INSTALL in forum Tech Talk at Northern California Ford Owners  .


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Posted by COBRA302MAN (Member # 6658) on :
 
i have some gauges i purchased from someone here and id like some info on how to install them i went on autometer and got some instrucions but dont really understang them it says to put the white wire to the 12 v dash lighting and the red in the 12 v ignition switch these are the one i dont understand any help would be appreciated
 
Posted by 91Trunkster (Member # 6598) on :
 
Run them behind the stereo, splice into the dash lights and the 12v ignition there, should be easy since they are right by where your tach will be mounted.

[ October 27, 2006, 09:35 PM: Message edited by: 91Trunkster ]
 
Posted by COBRA302MAN (Member # 6658) on :
 
should i just cut into the dash lights and what about the ignition do i just find a wire that comes from there that is hot
 
Posted by 91Trunkster (Member # 6598) on :
 
Right behind your radio will be a dash light wire for your stereo and also a 12v IGN for your stereo, just splice in however you were taught to splice.
 
Posted by COBRA302MAN (Member # 6658) on :
 
ok thanks man
 
Posted by luvmy5.0 (Member # 6699) on :
 
get it worked out yet? Where in san jose u at?
 
Posted by 91Trunkster (Member # 6598) on :
 
If you have a test light that will help quite a bit, turn on your lights and look for a hot line, the one that goes off when the lights are off is the dash lights, do the exact same to find 12v ign, just turn the ign on and off.
 
Posted by Blind (Member # 3052) on :
 
it's easiest to just run the backlight wire to the light by the ashtray, and get the 12v+ from the cigarette lighter.

my guage's backlights dim with the dimmer for the dash [Smile] It's nice when driving at night.
 
Posted by COBRA302MAN (Member # 6658) on :
 
yeah the one by the ashtray sounds pretty easy ill try that and im in east san jose
 
Posted by COBRA302MAN (Member # 6658) on :
 
i connected all the wires the lights work just the rpm stays at zero i connected the black one to where the battery gets ground and the green one to the negative side of the ignition coil please help
 
Posted by Blind (Member # 3052) on :
 
if you have an msd the tach green wire needs to get it's signal from the tach output on the side fo the msd box.

if you dont, try the other coil wire.
 
Posted by COBRA302MAN (Member # 6658) on :
 
no msd just stock ignition and put the green one the negative side of the coil and is the other one the black wire to engine ground is that good or is the one that make it work the green one
 
Posted by COBRA302MAN (Member # 6658) on :
 
anybody know why its not working
 
Posted by Blind (Member # 3052) on :
 
http://www.autometer.com/tech_faq_answer.aspx?sid=3&qid=28
 
Posted by COBRA302MAN (Member # 6658) on :
 
thanks man it might be that my 12 v source is wrong
 




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