Lanse, of course you realize that you're going to have to run the ECM for everything to operate. Now, I know a LITTLE here and a LITTLE there...like, the TPS has to have a reference voltage of 5 volts...
Your main voltage HAS to be 12.6 to 14 volts for everything to function; once the system goes below 10 volts, funky and not-so-funny things begin to happen. So make sure your battery, cables, grounds, and alternator are in AAA+++ condition to begin with...'cause this ain't gonna be like dealing with a 6V system with a generator and a magneto, that'll continue to run with a wimpy electrical system once you get it started.
There's a chart of the pin-outs for some of the common ECM's GM used, in the link below. Should be somewhat helpful...I hope. I know some of the "aftermarket" TBI systems use the GM #1227727 ECM, but I don't know if perhaps it's not as common now as it used to be.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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