Jim,
Thanks. I'll go by Radio Shack after work. Fluke can wait for a much brighter and richer guy than me.
Great minds think alike. I just went to Helms site before I got your response and ordered the 1994 book. Not cheap at $64 plus shipping, huh?
I did not think EM would be linked to the dome lights but thought that it might be indicative of some generic harness error or failure as you indicated.
Thanks for the help. Please come back if you think of anything new.