Pagoda SL Group

W113 Pagoda SL Group => Electrical and Instruments => Topic started by: silver surfer on July 09, 2022, 14:03:39

Title: Brown earth wires to speedo / rev counter
Post by: silver surfer on July 09, 2022, 14:03:39
Hi all

Just reinstalling the speedo and rev counter to my 69 280SL after many years. Are the earth wires fastened to the back of the instrument brackets by the knurled nut please?

Many thanks 
Title: Re: Brown earth wires to speedo / rev counter
Post by: Benz Dr. on July 09, 2022, 15:19:27
Yes. On both gauges or your instrument lights won't work.
Title: Re: Brown earth wires to speedo / rev counter
Post by: silver surfer on July 09, 2022, 18:52:38
Quote from: Benz Dr. on July 09, 2022, 15:19:27
Yes. On both gauges or your instrument lights won't work.

Thanks for confirming
Title: Re: Brown earth wires to speedo / rev counter
Post by: Desertpagoda on July 29, 2022, 12:07:59
yes, and, according to the DIN standard, EVERY solid brown wire is a ground! if u learn the DIN standard, u will know the function of EVERY wire color! ie: gray/blue....inst lights, red/green...radio power etc.
Title: Re: Brown earth wires to speedo / rev counter
Post by: 66andBlue on August 06, 2022, 18:32:04
Quote from: Desertpagoda on July 29, 2022, 12:07:59
yes, and, according to the DIN standard, EVERY solid brown wire is a ground! if u learn the DIN standard, u will know the function of EVERY wire color! ie: gray/blue....inst lights, red/green...radio power etc.
Hi, I would not mind knowing more about this DIN standard that you mention. I am aware of DIN 47 002 that specifies the color name abbreviation:
DIN 47002:1973-09
Colours and colour-abbreviations for cables and insulated wires
German title
Farben und Farbkurzzeichen für Kabel und isolierte Leitungen.

Which DIN defines the function associated with each color patterns? That would be extremely useful when repairing a harness.
Title: Re: Brown earth wires to speedo / rev counter
Post by: Desertpagoda on August 06, 2022, 23:24:43
look here. mine is blue, but...https://www.amazon.com/Automotive-Electric-Electronic-Systems-Bosch-dp-0898835097/dp/0898835097/ref=mt_other?_encoding=UTF8&me=&qid=