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..............................FIXED !................................................
You where right on the money Ken ( Quoted below.) and yes, the Schematic is exactly what I have here.
I went to MB OKC this afternoon saw my parts guy Danny. He said that the Star program lists the car as a 1997. 'V' in the VIN. However, the parts lookup shows the ECL sensor as A 129-545-02-24. which is what he supplied. (White tip.)
I told him that origonal sensor had black tip. He looked up the '97 listing for ECL and it came up, A-210-545-00-24. He got it from shelf and it was the black one. Back at shop I fitted Washer sensor back in bottle and plugged in ECL. Turned on and fired up motor.
ECL went out straight away. Guess what ? Washer lamp stayed on ! Grrrrrrrrrrrrrr, wait a minute, it just went out !!
The Washer sensor chamber needed time to fill up before turning out the lamp.............
I am NOT going to pull the ECL out to test the voltage resistence on it, it works, leave the damn thing be ! Obviously the system needs to read resistence adjusted voltage to determine which lamp to turn on. Schematic shows a logic module controlling bulb function.
FYI, if you turn the key to 'run' and the lamp(S) come on EXACTLY the same time as the BATTERY lamp does, there's a problem in the system. This system sets the warning lamps on about 1/10th second AFTER the red BATTERY lamp comes on.....
Anyway, the schematic Ken sent is correct for this wiring loom,
so it seems MB switched from a 1996 platform and installed a 1997 wire loom, because the color codes are all correct on this diagram. Also, the diag' shows internal resistors just like one of you already said. anyway, all I need to do now is install the trunk emblem and I'm finished... Whoppeeeeeeeeeee!
Thank you everyone........Don
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QUOTE........
"Also looks like its tied into the outside temp sensor.
Is it possible that although the car has a build date of 1996, it was an early "changeover" to the '97 electrical system under the hood?__________________
KenP
1996 S500 W140 Coupe".................UNQUOTE
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