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I have a 99 f150 XL 4.6, 5 speed. I spent some time tracing the leads around the ignition system to find the EDIS module. I guess I'm blind cos I can't seem to find it .
The purpose of this is to install a aftermarket tach coming off the EDIS. This seems to be a simple approach and I have a pin diagram handy for it.
I am initially shying away from tapping into the EEC. Maybe better yet, if anyone knows what wire color to splice behind the gage cluster that would be helpful too.