Hi
I just had the same problem on my 97 balzer and you will not belive the fix but think about it. You have multiple selinoids giving you problems. So it's a problem common to all and it's too many to die at one time. Replace the ignition switch and it will fix the problem. It did mine $95. check out this site where I got the answer
C:\Documents and Settings\Tom\Desktop\Can you help with Trouble codes P0740 P0753 P0758 P0785 P1860 - JustAnswer.mht
have fun