has anyone figured out a fairly simple way to feed a suitable electric signal to a ford diesel tachometer
without resorting to buying a 350$ kit that has the sprocket and pickup coil ?
Will I need an engine computer ? does the tach system go THROUGH the brain box electrically ?
I have noticed that the sprocket/tonewheel has a missing tooth...... I am guessing that the missing tooth
tells the computer what the crankshaft position is for things like advance/retarding....
hate to spend all most 400$ for a working tach......
Since I have a 1-st gen- it doesn't need to know crank position so all it needs is an rpm read.
thought of drilling a small hole in the idler pulley- epoxying in a cobalt magnet- add a solenoid as a pickup
- take the signal and put it through some kind of IC to re-scale the frequency to whatever the tach is expecting
(which I don't know what that is ?????)
(might use 2 opposing magnets to keep balance .....
Any ideas ? Like to use the ford tach that is in the truck now.
Tim