tbrooks

Hi, i am trying to install a sunpro tach into my 08 f150 xl v6 4.2l the original cluster does not have a tachometer in it. i am having trouble finding the correct wire to splice into to give me a rpm reading. I tried a wire that gave a negative reading off the coil pack i had feed back but it was fairly unresponsive. Has anyone tried this before or have any insight as to which wire i can splice to get my rpm reading? Any information would be greatly appreciated im at a standstill on this project at the moment

StonedGreen

try to find an xlt cluster with tach on it...i heard its fairly easy to do

Steve 39

Check further in this forum for the Aftermarket tach question thread... I just installed a Sunpro tach in my '05 STX with the 4.6 V-8, and you'll find all the info in the thread... I had to purchase an Autometer tach adapter #9117 ($75.00 from Summit). This sets up the correct signal for COP and DIS ignition systems. Once installed, it was a no brainer, and the tach works great.

https://www.f150forum.com/f4/afterma...rermarket+tach

FittsyF150

you can use a injector wire or COP wire do not use the red wire on the COP's or fuel injector i just had the issue of finding a tach signal wire for my remote start system...hope this helps

Mod (Ret.)

After the purchase of the tach and tach adaptor, you would be money ahead in buying a cluster from an XLT or STX with the tach included. Only the mileage would require reflashing if you wanted it to match.