Thanks MBDoc,
No I was just trying to eliminate everything. I have tried 3 different ETA's and all of the other components in the limp home system. New battery, alternator, voltage regulator, brake light switch, etc. Monitored voltage at rest, start, running and in limp home. No spikes (that I can see), no irregularities of any sort. Voltage always between 13 and 14.3VDC.
I do hear a relay chattering from somewhere behind the instrument panel. There are relays inside an enclosure behind the fuse box. That is where I'm headed next.
Anziani