John. Many of my weird and not so wonderful electrical problems were down to the common ground point behind the middle panel. My problem was more severe in that often there did not seem to be enough electrical oomph to drive more than one circuit at a time, ie I could have the lights on but not indicate at the same time, often the car had to be deliberatley rev'd just to get the indicators to work. Attempting hand signals in a DeLorean is interesting.... The centre control panel switches AND the voltmeter on my early car all take the ground point from behind the hazard light switch. My 'electrical' section in the files area has a photo. If your radio can be removed easily you can get to the area from there. You could then tighten the bolt, which in my case held no less than 9 grounding wires. It is also possible for test purposese to run a temporary ground cable using a croc-clip and run it directly to the battery post. With the temporary ground connected/disconnected I could create my problems at will, the voltmeter voltage shown on the gauge altered from 6-8V disconnected to a 'true' 12-13.5V with the cable attached. John Chapelhow 'Boeing' 0737 John Podlewski <john_podlewski@xxxx> wrote: Drops just around 8 volts, yes that low @ IDLE! With A/C and lights and radio on, it was fine six months ago when it was running before. Then radio shuts off and of course comes back on after I give it gas. Aftermaket AC Delco ALT., (maybe a year and a half old) I believe 110 output but I have to check. What could be the cause just started the other day and have not had a chance to diagnosis? To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/