... any one know how many 'poles" are in a '93 alternator? Trying to get my tach set up to run off the alternator after the 4500 install. TIA!!!

 

Your truck should already have a tach harness on it

 

Yes it does, but I want to keep the old tach I had... that read off a magnetic pick up in the bell housing. Being the wuss I am, I did not want to chance drilling a 3/4" hole in the new bell and risk cracking it. I need to know how many poles are in the alternator so I can figure out what Hz the tach need s to be set at. There are 9 DIP switches in that need to be in a certain position depending on ... poles in alternator, crank pully diameter, alternator pulley diameter and some other figure to plug into the formula. Have my signal wire now hooked up to the stator terminal in the alternator.

 

Poles is news to me but I have internal wire diagram from the shop manual.

 

I have it set what appears to be pretty darn close. Just want to find someone with a photo tach... or whatever they are called, and see how it reads.

 

i bought a photo tach from harbor freight for 20 bucks seams to work fine

 

Have a link to what you bought? Heck, $20, I'll buy one for myself, how does it read, just off a reflective tape?

 

i got mine on sale from the local harbor freight but heres the link http://www.harborfreight.com/cpi/cta...emnumber=41727
yes it reads off reflective tape which it even comes with also has a nice carrying case

 

Cool, thanks! I'll go by HF tomorrow after work and see if they have one !

 

make sure you get some batteries too

 

Mr. Big Ram.. if you get this let me know how it works for you..when you are calabrating your tach..

 

i have one and it seams to work for me