Clicking relay

Bernie Benz b.benz at
Sun Dec 3 15:20:29 EST 2006

Bentley and the description list inside my fuse box cover show #3 relay as
the horn relay. Should be an easy test. Relay positions number from L to R
looking from driver¹s side, first row is the one closer to the engine.


> From: "John Lagnese" <jlagnese at>
> I only have books 1 & 2 of the 3 volume set. The # 3 relay is cooling
> fan delay. I just went out and checked the cover of the fuse box. This
> is the under hood unit.
> John
> -----Original Message-----
> From: Bernie Benz [mailto:b.benz at]
> Sent: Sunday, December 03, 2006 1:32 PM
> To: John Lagnese
> Cc: 200q20V mailing list
> Subject: Re: Clicking relay
> John, 
> You must not have access to the Bentley wiring diagrams, inasmuch as #3
> relay in the main fuse box is the horn relay and #3 in the Aux panel is
> the interior light delay control unit. The only relay in the CC system is
> the compressor clutch relay. The fresh air fan delay is controlled by an
> engine coolant temp. sensor input to the A/C control head.
> Sorry, can¹t help much from your symptoms.
> Bernie 
>> From: "John Lagnese" <jlagnese at>
>> Hi,
>> I have been having an annoying problem with my 91 200 20V.  Since I've
>> had the car, when my climate control is set on auto or defrost the
>> system is fine. If I set it to bilevel or econ the #3 relay starts to
>> click fairly rapidly. I believe this is the cooling fan delay relay. I
>> tried a new relay and there was no change. Recently the relay slowly
>> clicks even on auto or defrost now.
>> Does anyone have any experience with this or any ideas?
>> John

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