Originally Posted by MI02SVT
i need some help on my tach the problem is i dont have one lol i want to hook one up but i dont know where to hook it too seens how i have a coil pack and not a distributor my truck is the base model f-150 xl anyone done this before
2 things ...
1)yes i have done it. you need a tachometer that uses "inductive pickup" which means it picks up the rpms off of the spark plug wire. i had an 04 f150 heritage(97-03 style) XL. search for "Iequus" at i think it was www dot carparts dot com or .net i ordered it from for about $60 plus shipping. it comes with i 2 plugs with wires attached. it works off of inductive pickup or off the distributor(you dont have one). all you do is mount it where you want plug in the plug with the power ground and a brown wire with a white clip on it(white clip goes over spark plug wire). there will be a green wire too, you wont be using this. but power it from your battery and ground it under your dashboard. you can either wire it up so it turns on with the ignition swith or hook it to 1 or 2 toggle switches(because it has a backlight too which you can choose 1 of 4 colors) 2 toggle switches if you want control over the tach seperate from the backlight, or just one if you want both at the same time. but you would turn it on a few seconds before you start the engine. or...
2) use your digital tachometer. here is how you do that. put key in ignition but do not turn it, press and hold the trip odometer reset button and turn the key to ON! DO NOT START ENGINE YET! after 5 seconds the odometer will change into "TEST" once it says this, release the button and press it as many times as it takes till it says TACH or TAC with 0000 after it. then start your engine. and thats it. it works on all ford trucks from 97 and up that have the digital odometer. this process will not harm anything at all. this process will not reset your trip odometer. while in the test mode you cannot go back to see the mileage. when you turn off the engine the process resets so the next time you start it, it will have miles on it. you must do this process every time before starting if you want the tach. also has a few tests that look like aztec stuff, but also has some you will notice. you can check if any dash bulbs are out, and test to make sure the gauges are getting power and a few other things. but there is no fuel mileage or anything of that sort unless you get the upgraded truck's cluster. hope this helps. any questions just ask me