We have an 81 300TDT w/ an electric speedo, how rare is that? Just thought I'd ask.

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I think all 1981 300TD Turbodiesels have electronic speedometers.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

My '85 has a cable, so you might tap the brake there.....

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

My 82' had a mechanical speedo.

Are you sure that you are not mistaking the cruise control pickup for the speedo connestion?

I'm pretty sure the standard speedo cable (that is like the one in my sedan) is not in the wagon anywhere behind the cluster. All plugs are in and it's not missing, speedo is accurate too measured via speed traps w/ indicators of how fast you're going (here in South CA)

The speedo plug has a screw on cover and when you remove it will have 3 prongs with ridges on their outer surface (for gripping). Pull it out and it will have a single tab on the right side (facing the cluster from the driver seat). If you peel back the wiring, it's soft not like a speedo cable which is hard.

Joe, where did you read this? This is Karugs btw

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Funny you could quote me, but you didn't see that I clearly typed 1981!

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

Now is that funny, really??

Was that a one year only option?????


http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1PV0091VK1Q002XKHG&year=1981&make=MB&model=300-TDT-001&category=P&part=Speedometer+Cable

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

It was a one year thing. After that, they went to the cables, why they pulled the "switcheroo", I don't know. I don't know why they have speedometer cables for the 1981 300TDT listed on FastLane, it's an error I guess.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

Well no it's not that, in fact it doesn't look at all like a speedo.

Jason, thanks I'll let you know if we need one. The sedan is not calibrated properly and is 10mph optimistic so I'll change that when I have sorted out other more important things. It's consistent all the way to 115mph (which will read 125).

If I go and take it out to swap the cluster housing (got a better one but with mech speedo) I might take pics. However I agree with HTown, I wish I had the electric speedo. That way there's one less thing to go wrong.

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