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Old 04-03-2001, 07:23 PM
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I have a 1988 420SEL. When I was removing the cruise amp the 14 pin plug pulled apart. Can anyone tell me what color wire goes to which number termial so I can reassemble the plug.

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Old 04-03-2001, 08:30 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
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I don't keep this information in front of me at home. Sorry.

You can purchase a CD repair manual in partsshop for future use. It has all of the wiring in it.
Donnie Drummonds
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Old 04-03-2001, 08:39 PM
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Location: Evansville WI
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I keep this information at home! MB gave all us roadside techs a full set of those discs. What the heck do I need 'em at the shop for, we got everything already! Oh, they put 'em in a real official looking CD-ROM case, too! OK, here we go: Socket 1 is Black with a pink stripe, Socket 2 is Yellow with a green stripe, Socket 3 is Grey, Socket 4 is Green, Socket 5 is White, Socket 6 is Blue with a red stripe, Socket 7 is Black, Socket 8 is Black with a red stripe, Socket 9 is Violet, Socket 10 is Blue, Socket 11 is Green with a black stripe, Socket 12 is 2 Brown wires, Socket 13 is Yellow, and Socket 14 is vacant (no wire)......Gilly
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Old 04-04-2001, 08:21 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
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On the 1988 420SEL's the # 14 pin can have a brown wire if the cruise computer is the analog version, no wire if it's the later digital version with coding plug~!
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Old 04-04-2001, 08:15 PM
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Thanks Everyone for the help, mine had the 14th brown wire. I have the plug back together and have resoldered the amp. I just came in from a test drive and the cruise is working 100%
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Old 04-04-2001, 10:43 PM
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Location: Evansville WI
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MB Doc: Yeah, that's what gets me every time I gotta replace an amp with the new style with coding plug, gotta cut that wire, there's an SI about it, man that's an old SI. I never new about this analog vs digital stuff. I thought the whole reasoning behind the coding plug was that MB could sell the same amp for lots of cars, but have different coding plugs, which represented the chassis/engine combinations. Anyways, that's what the teamleader says, he's been a MB tech since our dealership got the franchise for MB in '72. What's the deal with calling the cruise module an "amp" anyways? I figure MB thinks they'll get sued for causing people to turn into stutterers by saying "cruise control control module", especially mechanics and parts guys. SIX TIME Master Guild!? Holy Crap, that's alot of German beer! I got Master Guild last year (2000), first year I was elgible due to not being able to go to training for the first 3 years I was working on MB's (long story). I'm waiting to see how the new TRP will turn out, ain't had a training date since it started. Wondering if they'll even still have a pewter model for Master and Master Guild. The pewter model I got for Master is the "last" one, last serial number, so it would really be something if they don't do the pewter models again. This whole new thing they're doing this year, I just don't know how that's going to work out, we'll see, I guess. Wonder if you got Master or Master Guild in 93, I think it was, the year they used the 300SL Gullwing for the pewter model, THAT would have been a good year to make Master.......Gilly
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