The Tahoe Alt has 4 pins and the plug had 2 wires. My Plug has one wire. I hope One is as good as two ...

 

I Planned for a longer belt and needed it. The Alt from the Tahoe only Had one Power wire and the two wire plug. My Blazer was more complicated. The one wire/4pin plug and two hot wires with ring connectors. One ran into a harness on the way to the Battery and the other two more wires on another ring connector running into another harness back toward the firewall. Rather than deal with a lot of unknown things, I simply added a real fat [#1 I think] Hot wire directly to my battery completing my "Big 3."

No visible increase in voltage and now a minor clicking/whining when I try to switch the A/C on. Gonna drive it around and see if it has any quirks.

 

Some Pix to show the size difference, Maybe somebody here can say what Alternator I got LOL

 

Looks like you got a version of the AD244. The DR44G has DR44G stamped on the top.

 

Thanx Tajohns

So Far - so good. I was concerened that the wiring may be a problem. The "donor" had two wires from the plug. My Blazer only has one.

My local parts houses only test for "working/not working;" so how much Amperage it can produce is unknown. I am hoping that I can draw a lot from it for lights and spare battery. I guess I won't know until I can get that kind of demand.