Is there any chance you could find out who makes that tach adapter/what the part # was? My installer isn't familiar with this tach adapter, so I need to get the info or the part for him to put it in.
I've searched around and found a couple of options, but don't know which one to try:
First, I found this DB-TACH2 by Omega: here
Second, this "Peripheral PDATACH2 Ford tach generator" Peripheral PDATACH2 Ford tach generator - PDATACH2] here
The other thought I had was the MSD GMR (8918) hooked to an injector wire at the IDM or valve cover harness.
If you were able to tell me what you got (since it worked), that would be GREAT, so I don't have to buy these parts, pay to have them installed only to find that they don't work.
I got the 5901 and I definitely love the 2-way feature, but the way its hooked up right now, it doesn't know if the engine is running, only if the brain attempted to start the engine. I can't see my truck when I start it either, so I would love to know if it actually started or not.
Did they set yours up on a fixed crank time, or does it just crank until it sees that the engine is running?