Bill - In my experience with things electrical and M/B if a bunch of weird stuff starts happening it has got to either be a bad ground somewhere or a blown fuse on an Over voltage Protection Relay. Since the '81 300SD doesn't have a OPR then..... Like the other listers have said, battery ground cable, bonding cables or the grounds behind the instrument cluster. When you were changing out the flasher you probably saw all the brown ground wires there. There must be like 20 of them. On the battery ground cable be sure the wire lug is clean and also the body that the lug is clamped against.
Barry > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of BillR > Sent: Monday, August 28, 2006 10:33 AM > To: 'Mercedes Discussion List' > Subject: Re: [MBZ] Short?? > > > There is a big amp in the trunk - not hooked up, and a properly > functioning > Panasonic receiver / CD player installed by the PO. I am not aware of any > other mods he did other than the small flasher he put in the dash to mimic > an alarm system. Nothing else obvious, but the radio installer [probably > the PO] could have done anything, I guess. The [expletive deleted] PO > bought it in CA, installed the stereo, bought correct paint for > it, stripped > it down and taped for paint, then let it sit in the sun / rain for months > before selling it to my son for $300. He also put nearly 15k > miles without > an oil change [hence my replacement engine last year]. Love the > car, though > - not too thrilled about the random features. > Good suggestions. > BillR > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of LarryT > Sent: Monday, August 28, 2006 1:18 PM > To: Mercedes Discussion List > Subject: Re: [MBZ] Short?? > > Hi Bill, > If any aftermarket things were added that required tapping into the > electrical system - make sure to investigate those 1st. If possible, take > it out to see how things work without it - > > Larry T (67 MGB, 74 911, 78 240D, 91 300D) www.youroil.net for > Oil Analysis > and Weber Parts Test Results http://members.rennlist.com/oil PORSCHE > POSTERS! youroil.net Weber Carb Info > http://members.rennlist.com/webercarbs > Porsche Road Test http://members.rennlist.com/roadtest/ > . > ----- Original Message ----- > From: "BillR" <[EMAIL PROTECTED]> > To: "'Mercedes Discussion List'" <mercedes@okiebenz.com> > Sent: Monday, August 28, 2006 1:09 PM > Subject: Re: [MBZ] Short?? > > > > Sorry, meant to include that information. The battery is also 1.5 years > > old. > > BillR > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > > On Behalf Of Desert Rat > > Sent: Monday, August 28, 2006 12:49 PM > > To: Mercedes Discussion List > > Subject: Re: [MBZ] Short?? > > > > How old is the battery? > > > > On 8/28/06, BillR <[EMAIL PROTECTED]> wrote: > >> My 1981 300SD has developed numerous random electrical features > >> that seem to point toward a short somewhere, and I am in hopes of a > >> head start on where to look first. For the past year I have had > >> problems with the left blinker flashing continuously when the stem is > >> centered - though it seems to just barely make the threshold to flash, > >> and both blinkers respond properly when turned on.. 50 or so > >> repitions of the emergency flasher switch do nothing much for the rest > >> of that day, but the next day it stops and is no problem for a few > >> weeks or even a month or two. A couple of days ago the oil pressure > >> gauge suddenly went from correct operation [as far as I can tell] to > >> pegging the 3 when the key is switched on. For the last few months > >> [about the time my AC started acting up, I think] AC blower seems to > >> run with the engine speed, as does the brightness of the headlights, > >> though when I forget the lights are on for an hour [warning buzzer > >> works when it wants to] I have no problem starting the car, with no > >> hesitation or slowness of the starting motor. On occasion I have > >> noted the tach jumping with the blinker, and I think once it did it > >> with the brake light. I am hoping this mixture of random features > >> will click with someone and a suggestion for a starting spot will come > >> up. All the fuses were replaced 1.5 years ago, though with the > >> plastic ones that tend to melt the blower fuse - that one > replaced with a > > more robust German make fuse. Replacing the flasher did nothing at all. > > Ideas? > >> Thanks - BillR > >> Jacksonville FL > >> 1981 300SD 279k miles > >> > >> > >> > >> _______________________________________ > >> http://www.okiebenz.com > >> For new parts see official list sponsor: http://www.buymbparts.com/ > >> For used parts email [EMAIL PROTECTED] > >> > >> To Unsubscribe or change delivery options go to: > >> http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > > > > > > -- > > John Freer > > Palm Springs, CA > > 1992 500SEL 143K "Stardust" > > 1996 Sidekick 57K "Kermit" > > 1992 500SL 109K "The Flying Plum" > > > > _______________________________________ > > http://www.okiebenz.com > > For new parts see official list sponsor: http://www.buymbparts.com/ For > > used > > parts email [EMAIL PROTECTED] > > > > To Unsubscribe or change delivery options go to: > > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > _______________________________________ > > http://www.okiebenz.com > > For new parts see official list sponsor: http://www.buymbparts.com/ > > For used parts email [EMAIL PROTECTED] > > > > To Unsubscribe or change delivery options go to: > > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > -- > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: > 8/25/2006 > > > > > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >
