On 123s I like to remove the under-dash panel and push out the instrument cluster from the backside (i.e., from under the dash). In addition to electrical connectors you may have an actual oil hose for the oil pressure gauge (not sure about an 81 model).
> -----Original Message----- > From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of > Curley McLain via Mercedes > Sent: Tuesday, March 07, 2017 9:38 AM > To: Mercedes Discussion List <mercedes@okiebenz.com> > Cc: Curley McLain <126die...@gmail.com> > Subject: Re: [MBZ] 123 weirdness > > I will try to pull the cluster today and see if I can find the ground. > It is near freezing, so I am reluctant to pull on the cluster until I can get the > dash near 70ยบ or so. Warm dash is less likely to break. > > > MG via Mercedes <mailto:mercedes@okiebenz.com> March 7, 2017 at 8:25 > > AM The Blinker relay, 4 way switch and the dash blinker indicator > > lights are all grounded behind the dash. You have to have a good > > ground there for the relay to work reliably. > > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com