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#1
03-07-2010, 10:51 PM
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Any idea what this connection is for?
Pictures down in the corner by the battery, where a bunch of cables are routed on a 1982 300CD. Standard Mercedes 2-round pin male and 2-round pin female connections. Mine are disconnected. Line on the one end goes down along some heavy cables, can't route it.
Everything seems to work fine... Any ideas?   
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Current Diesels: 1981 240D (73K) 1982 300CD (169k) 1985 190D (169k) 1991 350SD (113k) 1991 350SD (206k) 1991 300D (228k) 1993 300SD (291k) 1993 300D 2.5T (338k) 1996 Dodge Ram CTD (442k) 1996 Dodge Ram CTD (265k) Past Diesels: 1983 300D (228K) 1985 300D (233K) Last edited by whunter; 03-08-2010 at 11:49 AM. Reason: attached pictures 
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#2
03-07-2010, 10:56 PM
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That looks like the front brake pad wear indicator connection.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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#3
03-07-2010, 11:06 PM
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AHA!
OK, thanks. Ill reconnect it and see. I do not recall... on my BMW the brake lining light turns on at startup as a check. Does this happen on a w123? i.e. would I see it light up if it is connected and not light up if the connection is broken, or something like that? THanks!
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Current Diesels: 1981 240D (73K) 1982 300CD (169k) 1985 190D (169k) 1991 350SD (113k) 1991 350SD (206k) 1991 300D (228k) 1993 300SD (291k) 1993 300D 2.5T (338k) 1996 Dodge Ram CTD (442k) 1996 Dodge Ram CTD (265k) Past Diesels: 1983 300D (228K) 1985 300D (233K)
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#4
03-07-2010, 11:14 PM
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nope.
it will light up when you turn on the key, weather or not it's hooked up. but it will stay on if the pad sensor is worn into the rotor.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#5
03-07-2010, 11:16 PM
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Sure. My brakes are all fine... But who knows if someone got annoyed in the past. I have all receipts and no expense was spared, so I can't imagine they would have disconnected to fool the system.
That said, once on my BMW I screwed up the routing of a sensor and cut it in the suspension... I replaced it, but disconnection could have been a viable option too...
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Current Diesels: 1981 240D (73K) 1982 300CD (169k) 1985 190D (169k) 1991 350SD (113k) 1991 350SD (206k) 1991 300D (228k) 1993 300SD (291k) 1993 300D 2.5T (338k) 1996 Dodge Ram CTD (442k) 1996 Dodge Ram CTD (265k) Past Diesels: 1983 300D (228K) 1985 300D (233K)
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#6
03-07-2010, 11:22 PM
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I bet the bulb on the cluster is missing or burned out.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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#7
03-08-2010, 11:41 AM
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Inspect the harness bolted to the caliper.
Part # 126 540 82 07.
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83 SD 84 CD
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#8
03-08-2010, 11:54 AM
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Answer
Quote:
MB# 126 540 82 07
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#9
03-08-2010, 12:25 PM
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Just to be sure I have this straight...
Brake lining light doesn't come on unless open circuit due to sensor wearing down... Which is then followed by intermittent shorts due to rotor contact? Or is one end 12v, and the bulb lights only when continuity is made via the rotor? The light doesn't always stay on once tripped? However, mine is always open... Should never see a light then... Which end, male or female goes to the brake sensor itself? I want to start there for continuity. Brakes are good...
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Current Diesels: 1981 240D (73K) 1982 300CD (169k) 1985 190D (169k) 1991 350SD (113k) 1991 350SD (206k) 1991 300D (228k) 1993 300SD (291k) 1993 300D 2.5T (338k) 1996 Dodge Ram CTD (442k) 1996 Dodge Ram CTD (265k) Past Diesels: 1983 300D (228K) 1985 300D (233K)
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#10
03-08-2010, 12:35 PM
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Here is a picture of the front brake sensor. Do you still have a sensor on the brakes? If not, is there a connection for the sensor at the caliper?
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too many w123's 84 280 SL 5 speed 
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#11
03-08-2010, 01:04 PM
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Answer
Quote:
 The cable that passes through the fender well goes to the wheel...
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#12
03-08-2010, 08:26 PM
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Yeah, kind of tough as they both kind of go under the battery...
Im in CA right now, the car is in NJ, so it will wait a bit anyway.
__________________
Current Diesels: 1981 240D (73K) 1982 300CD (169k) 1985 190D (169k) 1991 350SD (113k) 1991 350SD (206k) 1991 300D (228k) 1993 300SD (291k) 1993 300D 2.5T (338k) 1996 Dodge Ram CTD (442k) 1996 Dodge Ram CTD (265k) Past Diesels: 1983 300D (228K) 1985 300D (233K)
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