Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 10-25-2004, 01:00 AM
Registered User
Join Date: Aug 2004
Posts: 10
Speedometer cable

Hello everyone

Where does the speedometer/tachometer cable insert into the transmission?
I spent yesterday claustrophobically underneath the car (no jack stands) trying to find the cable to disconnect it so I could get to a beeper thats been attached to my indicators in the instrument cluster and driving me insane.

The Haynes manual says it's on the left side of the transmission. I'm pretty sure I found the two cables together in a sheath but there was no way I could see the 10mm nut the manual says connects it. All I could find was what looked like a black rectangle type thing, what's that?

Alternatively, I read somewhere on this site that you can disconnect the speedo by getting access through the speaker cavity on the dashboard, how much easier is that?

Klaus Fluoride
1987 230E

Reply With Quote
Old 10-25-2004, 01:44 AM
Posts: n/a

this model does not have a cable, it is electrically driven. you can just pull the cluster.
Reply With Quote
Old 10-25-2004, 02:06 AM
Registered User
Join Date: Aug 2004
Posts: 10
Speedometer Cable

That would explain a lot, thanks.
Hmmm, the cluster is loose but something's definitely holding it back, I assumed it was the cable.
The right hand side of the cluster moves a centimetre or two but the other side won't budge.
How does it come out?
I'm reading in the manual about making a hook from a welding rod to get between the cluster and the facia and pull it out.
Reply With Quote
Old 10-27-2004, 10:00 PM
Posts: n/a

sorry, i was thinking of the 126 chassis, the 124 does have a cable, sorry for the bad info
Reply With Quote
Old 10-27-2004, 10:22 PM
Registered User
Join Date: Aug 2004
Posts: 10

No worries CArson, your advice did no harm.
I got it out without disconnecting the cable and without any other tools, the cluster came out pretty easily just by pulling at it with my hands and I unscrewed the speedo from inside.
I was looking to see if there was an obvious reason my tacho isn't working. I can't work out how the tacho works, there was no cable attached to it. Surely there must be a cable to it somewhere?
Reply With Quote
Old 10-28-2004, 01:51 AM
Registered User
Join Date: May 1999
Location: Sacramento, CA
Posts: 1,565
re: Speedo - is attached to the transmission near the rear of the housing, secured by a pinch fitting with a 10mm bolt that must be completely removed to detach the cable. It is also secured in the driver's footwell by a clip behind the brake pedal, and should be at least disconnected there before removing the instrument cluster (manual says to disconnect at transmission as well, lest you stretch the cable housing).

Sounds like you found the vacuum line to the transmission modulator, the other black cable should be the speedo one.

re: tach - this I believe is indeed an electronic signal from the engine. Don't know much more than this, unfortunately.
Reply With Quote
Old 10-30-2004, 12:44 AM
Posts: n/a

send me your email and i will email a wiring diagram to you

Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 04:34 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page