Probably best to post this in the tech group, you'll get more help in
there

------------------------------------
Mike Mangione
http://www.carforums.net

I am faced with a similar problem, but in my case, it seems to be an
intermittent alternator output.  Maybe you can trace your wiring with
a voltmeter.  Me, I'm at my wit's end, because my circuit diagrams in
my *books* do not match the circuits in my vehicle!  Not for
troubleshooting beyond the *replace this fuse* level.

This may not be an option for you, but I just dug out my Amprobe Pasar
Current Tracer, and will detach my car battery, subtituting a 9 volt
pocket battery for the transmitter power source.  The transmitter
(fox) puts a pulsed RF signal on the line/wire of interest, and you
trace it with the hound ( receiver ).

This way, instead of going through 1100 wires in 20 different
harnesses, I can follow the RF signal to where it -stops- or becomes
markedly attenuated, and focus my attentions there, working =back=
from the alternator to the ignition switch, through wherever the RF
signal takes me.

I *think* there is an inexpensive version of this device at sears.
Inexpensive as in less than the sales tax I paid for this monster.
Although, over the years I've certainly recovered my cost for the
*thing.*

Get a fox and hound circuit tracer at Sears.  My Amprobe kit cost IIRC
near $600 at a specialty house.  You can do it for maybe...$50 ?????

Lg

GM cruise breaks wires (4 wires) at the area where they exit the stalk
and begin the routing inside the steering column.  This is a common
problem.  It also means removing the wheel to replace (most times but
not always) and to reroute to replacement stalk/wiring.

Pete