Ferrari Mailing List: Re: Electrical Relay guide

[LarryT (l02turner]

You're very welcome Peter,
    The thing I liked about it was the detail description of them many different kinds of relays.  I used to think, "a relay is a relay" but not any more.   There are internal differences so if I select the wrong one I can do damage.  The ones with diodes , dual output, etc - all make make choosing the right one a critical decision.
    The diagrams of the internal wiring are very helpful IMO.   Recently, I added relays to my 911 headlights last year and when I bought them, I selected the middle choices - not too expensive, not too cheap.  IOW, I used the "Goldilocks" method and  I got lucky when I picked the right ones ;-).  I wish I had seen these diagrams when I was preparing to make my selections!      I need to reconsider my "Goldilocks" approach.
    I also found out what kind of problems a bad or intermittent relay can cause!  My headlight relay had corrosion on the points and it would stop my turn signals from time to time along with the headlights & brake lights.  I'd stop, open the hood and move the wires & fuses around looking for a problem until the lights started working again.   I looked at wires, fuses and the fuse box trying to find the problem.   Hopefully, (fingers crossed) the problem is fixed.  So far, after 2 days it is working.   
    Back to the website, I am considering adding a relay and buzzer as described to tell me if I leave the headlights on when I turn the engine off; the older I get the more often I forget things are, so this would be a great addition. 
    I think I'll do what you did and replace all of my relays - I only have 3 or 4.  I should have done this before now.   ;-)

Take care --
LarryT
  

On 8/2/2015 3:09 AM, Peter Rychel wrote:

Very cool. Thanks for passing that along.

I replaced all of my relays shortly after I bought my 308 and haven't touched them since (almost 15 years now)... The original Bosch ones were working, but replaced them anyways. The single Stribel unit however was toast (and was of the "87b" type, controling the external lights).

Peter

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From: l02turner [at] comcast.net
Date: Sat, 1 Aug 2015 07:34:02 -0400
Subject: [Ferrari] Electrical Relay guide
CC: ferrari [at] ferrarilist.com
To: dino308gt4 [at] hotmail.com

I found this when looking for info on 12v Relays:
http://www.12voltplanet.co.uk/relay-guide.html

All of the info is helpful but the part I thought the owners of older cars might benefit from is down toward the bottom.  It tells how to add a buzzer using a simple relay wired to the front door light switch so a warning can be added if you leaves the lights on.  Also, a relay can be added to add fog lights to the main headlight circuit as well as a few other ideas.

Along with the above there's info on testing relays and the internal design of relays so the correct replacement can be found if need be.

Enjoy -
LarryT

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