Raptor shift light off of PCM feed

During my turbo build I did a lot of research
I didnt like the idea of tapping into the Coil on Plug wire for a tach
I had two tach feeds I needed to grab
One for the raptor shift light and one for the AEM Wideband gauge
Since I was alreday tearing apart the PCM wiring to install the WOT box,I thought I would give this a try

It works on my 2008 WOOT WOOT


On 2007 and newer cars there is a pin on the ECU labeled CTO (clean tach output) that is not used. There is no “pin” in the plug where the pin comes out of the ECU.

The pin is located in the middle plug on the ECU (the “B” connector). It’s the 50 pin connector. The pin is located at C-25 (it’s labeled on the plug). run the wire from the ECU right to the tach or any feed that needs a tach signal

This PIN #25 will have a dead Plug in it, You will need to remove the dead plug to insert your PIN. We used was from an old Ford harness, they were the same size.

Thats the hardest part ,finding a pin thats the correct size for the PCM Plug


Then set the Raptor shift light to 8 cyl the switches are #1 on and #2 and #3 off

Here is a link to the control pack upgrade the PDF instructions are half way down in the description.

https://www.fordracingparts.com/parts/part_details.asp?PartKeyField=10560

Here is a pic of the PCM connector and pin outs
And a pic of the switches on the raptor, and a couple of pics of the donor plug I used for the pin
Need to set the raptor for 4PPR

Nice and Clean No Tap adapters to mess with , and no tapping into Coils
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Interesting... I'm working with an 06 gt, it looks like I can pin the 25 on the 175b, for the tach. Use 35/36, 1118 wire for 12v, 47-49 for ground... But , set it for 4PPR?... I'll try it... Thanks for the info

I like this, you have any pins left over?

irishpwr46 said:

I like this, you have any pins left over?

Click to expand...

I will look for the donor plug I used it should be laying around here

Sorry guys Plug is long gone
But pics are still here, maybe you can find one from that

Very nice, as I'm looking to use this feed from the pcm!!!

BTW, I have plenty of the pcm-connector pins from a parted out harness.

feel like sending one this way? I will paypal you $5

guys dont forget

This PIN #25 will have a dead Plug in it, You will need to remove the dead plug to insert your PIN


Good luck let me know how it works out

I hate to wake up a old thread but will pin # 25 run any tach or shift light?

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STL2SLO said:

I hate to wake up a old thread but will pin # 25 run any tach or shift light?

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Click to expand...

To the best of my knowledge yes
Some tuners are using it on Monster tachs

I want to do this. Can anyone point me in the right direction on finding the pins and how to repin it. I have never messed with a wiring
Harness before. I did go to the junk yard a pull a couple of pins from some older fords. But worried about messing something up. I wanna make sure I have the right size pins before I mess with it. Can anyone point me in the right direction. I plan on using it for a stewart Warner digital tach and shift lifht.

I used this for signal to a msd window switch after seeing it here. Works awesome! Using the coils for the window switch never gave me a clean signal, it would come and go. This signal is clean and consistent. Great info. By the way, I used it on 2 different 2010's, works great.

Hmmm, I'm using a coil wire and to my knowledge has always worked fine on my 2007.should I move it?

has anyone completed this and got it to work on an 2005 or 2006?

one eyed willy said:

Hmmm, I'm using a coil wire and to my knowledge has always worked fine on my 2007.should I move it?

Click to expand...

I also have a 2007 and installing the shift light and I taped into the coil wire and i went to go and test it. It worked for the first two times then nothing. Ive checked my connections took the wire off the coil and soldered the green wire to the coil drive wire ( #4 cylinder green wire) and again worked twice after that then nothing.. i have the setting on 1/2 ppr as required in the instructions. Im totally clueless and might try direct to the pcm. But what am i doing wrong or is it a bad shift light??

I've never wired a shift light, but my MSD window switch would intermittently lose signal when wired to the coil wire, or the injector wire. MSD's advise(if you want to call it that), was try another wire. The clean tach output from the pcm, is just that. Clean signal designed just for rpm reading.

Thanks man ill just have to do that

deathwishracer said:

I've never wired a shift light, but my MSD window switch would intermittently lose signal when wired to the coil wire, or the injector wire. MSD's advise(if you want to call it that), was try another wire. The clean tach output from the pcm, is just that. Clean signal designed just for rpm reading.

Click to expand...

Glad it was of use to some

https://vimeo.com/138822082
Will work with any shift light/tach or device requiring a tach signal.


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I spliced in to a coil wire (rear coil, driver side) on my 06 and never had any problems.