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installed one one friends handicap van with lift normally they read the battery voltage to determine when the car is started voltage drops when starting .. when started the battery voltage rise back above the intial start ..you need to connect to the coil for RPM/Tach funtion so a drop in battery voltage does not shut system off conversily car will restart when battery voltage rise this would happen when my friend used the lift due to batter voltage dipin when lifting when he stopped (in van) it would restart add the wire to the ciol and set the 4105L to tach mode see manual https://www.directeddealers.com/manuals/IG/Viper/QRN4105DP%202013-06%20web.pdf
Who manufactured the tach? Maybe they have a web site and instructions? Did you tach come with instructions?
I looked at autometer instructions for your vehicle, have to use an adapter, it ties into the power wire for your coil pack. The adapter costs about 97 bucks, not including tax.
Different tach manufacturers may have different hook-ups?
The green wire from the tach goes to the negative side of the coil or if its an HEI distributor it will connect to the left of the hot wire going. to the distributor.
Notice the fuse description that sais IG-COIL 15amp. This fuse runs the coils and the PCM as you will notice the PCM is the last item listed in this curcuit.
The Powertrain Control Module (PCM) is located behind the right hand side of the glove box attached to the bottom right hand side.
To get the tach to work you will need an adapter available from MSD. The last one I bought was about $80, but it has been awhile. Go to msdignition.com and do a search for tach adaptor for more information. Good luck.
aftermarket tachs have 4 wires. red for power (pos.) ,black for ground Green goes to distributor tach terminal or neg side of coil , and white for internal light. yours i'm guessing, ig is power, - is ground,and e is engine. goes to dist. see if that works.
The RPM guage (tachometer) reads the spark impulses from ground terminal of the high voltage sending unit. I've never had to install a tach on an Accent, but for the most part the wire (on other model Hyundai's) is green and connects to the distributor primary or negative (-) side of the ignition coil. And then to the Tach terminal. Do not connect to coil on If yours is an MSD ignition, do NOT connect to the coil!!. Some electronic ignitions have a tach terminal on the ignition box, the green wire may connect there. Hpe this helps....
That should be the white wire rom the dist to coil. eather way you will not hurt the tach if you were to get it wrong. There are only two wires. I would look at the distributor and on the top of the cap there it writing and it will say tach an you can plug it directli into that.
Tachs are coil sensing. Since you have a start problem, chk tach wiring at coil and coil wires.
If all is good, Locate or identify the tach wire and disconnect it. The tach wire should be on the negative side of the coil. If bike starts without tach wire hooked up, Your tack is more than likely the culprit. If bike stll won't run, chk for power to the coil and any possible fuse in ignition circuit. Under the seat I think. Good Luck
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