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jumping fuel relay 420 SEL

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#1

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01-03-2007, 02:16 PM

jriewer

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jumping fuel relay 420 SEL

Can someone tell me what pins to jump on the fuel relay of a 87 420sel to keep the fuel pumps running? Other posts indicate jumping 7 and 8 but dont know if thats applicable to a 10 pin relay.

Thanks

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#2

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01-04-2007, 06:53 PM

jriewer

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bump...

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#3

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01-05-2007, 10:45 AM

david s poole david s poole is offline

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turn relay upside down,two of the pins opposite each other will be designated 87 and 30.join these together and pump will run all the time even with key off.

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David S Poole
European Performance
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"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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#4

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01-05-2007, 11:19 AM

jriewer

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Thanks David!

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#5

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01-07-2007, 01:45 PM

Paul

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Quote:

Originally Posted by david s poole

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turn relay upside down,two of the pins opposite each other will be designated 87 and 30.join these together and pump will run all the time even with key off.

Or you can jump 87 and 15 to power it up only when ignition is on.
paul

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