Indicators and washer pump connected ?.

tomadaly

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450SL - 1973 - auto
Have just got a 1987 200T 124 estate. Indicators not working.
I took the combination relay from my w124 230ce and indicators working..but
When indicating right the windscreen washers squirt in time wiyh the flashing indicators.

After several hours im still scratching my head... anyone come across this
 

Flyinspanner

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CLK320-A209 (sold CL500 & W168)
My guess is either incorrect relay, or a poor common Earth point to both. If they both are ok, then the multi function switch.
 
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tomadaly

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Both relays are the same so i have eliminated the relay.

I now suspect the combination switch. Seems to be several versions so need to dismantle

How do i check out a common earth problem ?l
 

Flyinspanner

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Sometimes a bad earth will allow power to flow back through another circuit (like when you see tail lights flashing in time with indicators - bad earth at rear lamps).
Wondered if front indicators used same earth point as your screen washers. You’d need a wiring diagram and location chart.
 
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tomadaly

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Thanks for all the advice.

Turned out to be a simple problem. Rather than take 2 cars apart to swap over combination switches i spent several hours with a multimeter trying to work out where problem was. When i took the indicator bulb out i noticed that when i pressed the washer stalk it lit up. Was totally confused at this... then a it struck me. Some ass hole had swapped the connectors for the washer pump and the indicator.

All sorted. Not sure if im happy its sorted or want to strangle someone.
 

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