924Board.org

doomer77 · Joined: 10 Jan 2006 Posts: 266 Location: Huskvarna, Sweden

i looked over my realy panel today and was a little bit worried that relays 1,6,7,8,10 (haynes manual numbering) was missing

now i dont have an A/C so that relay 6 is missing is no problem, i also dont have a headlight washer (number 7).

but what about relay 1, 8, and 10? what excatly do they do and for what reason would anyone remove them from the car?

cheers,
erik
_________________
Why drink and drive when you can smoke and fly?
Carpe diem. and if that doesnt work; get drunk!

1980 924 n/a - engine swap begun
1989 Volvo 480ES

chris24 · Posted: Wed Feb 08, 2006 6:17 am Post subject:

1 - Headlight flasher low beam relay - don't know about that one, but my flash etc works fine and isn't there one of these relays on my car.
8 - Intermittent wiper relay. I would find it a PITA to not have one.
10 - Headlight flasher changeover relay - again don't know what it is, don't have one and I'm not going to worry about it!
_________________
1983 - 924 (185K miles) - not mint
1985 - 924 (148K miles) - mint
1990 - 944S2 cab (52K miles)

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

First of all, cars manufacturered for different markets may have different relays or the relays may be arranged differently in some cases. The lower two rows of relays are fixed in function. The upper (3rd) row of relay sockets are installed on the the basic fuse block/relay panel. This upper row of relays can be installed or rearranged at will. Do not Assume that the upper relays are arranged as described in your Owner's Manual (if you have one).

In my 924 cars I rearrange the upper row of relays. install the alarm relay (and other relays if needed, if I have room). This is a convenient place to hide your alarm relay in plain sight where you have quick and easy access in an emergency, and a thief will not be able to figure out where it is.

Early cars have a headlight relay. On later cars, the headlight relay is deleted, and a shorting bar is installed so the headlightes will still get power (this may mean that the shorting bar could be removed and the relay restored if you want a relay in your headlight circuit instead of direct wiring).

Doomer77, as I wrote earlier, the Intermittent Wiper Relay missing is the reason that your wipers do not park properly.

chris24 · Posted: Wed Feb 08, 2006 7:50 am Post subject:

That is exactly what will happen without the relay; wipers just stop at whatever point they are when you flick the stalk to neutral. This is a picture of my spare relay...might not work, only signed up to yahoo photo today...

[img]http://us.a2.yahoofs.com/users/43e91434z7c21abbd/43c0/__sr_/2cf5scd.jpg?phwnR6DB5Q7N.8oz[/img]

And gohim says that the weird P symbol is a porsche trademark which is news to me...it means that this is a genuine PORSCHE relay unlike most of the VW/Audi stuff...nice.
_________________
1983 - 924 (185K miles) - not mint
1985 - 924 (148K miles) - mint
1990 - 944S2 cab (52K miles)

chris24 · Posted: Wed Feb 08, 2006 7:51 am Post subject:

RUBBISH!
OK, maybe this is better.
http://us.a2.yahoofs.com/users/43e91434z7c21abbd/43c0/__sr_/2cf5scd.jpg?phwnR6DB5Q7N.8oz
_________________
1983 - 924 (185K miles) - not mint
1985 - 924 (148K miles) - mint
1990 - 944S2 cab (52K miles)

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

Just because Porsche has a trademark symbol on an item, does not mean that Porsche actually made the part.

It just means that the part came through the Porsche design production system.

You will find the Porsche trademark on many of the parts that are in our cars. The Clutch disc and pressure plate are two. Is there any doubt in your mind that Sachs didn't make the original clutch disc and pressure plate, and the spares sold by Porsche Dealers today?

doomer77 · Joined: 10 Jan 2006 Posts: 266 Location: Huskvarna, Sweden

alrite thanks for the info
looks like the only one i really need is a wiper relay, as for the headlight relay, is there any advantage/disadvantage to not having it?

erik
_________________
Why drink and drive when you can smoke and fly?
Carpe diem. and if that doesnt work; get drunk!

1980 924 n/a - engine swap begun
1989 Volvo 480ES

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

chris24 · Posted: Wed Feb 08, 2006 6:30 pm Post subject:

No, you are right...there is no doubt in my mind...I just thought it was quite an apt thing to put up given the next topic in the list.
Sorry Gohim....

_________________
1983 - 924 (185K miles) - not mint
1985 - 924 (148K miles) - mint
1990 - 944S2 cab (52K miles)

doomer77 · Joined: 10 Jan 2006 Posts: 266 Location: Huskvarna, Sweden

well said mike, unless your a original freak

which im certainly not!
where can i find the wiper relay thou? did a quick internet search and turned up nothing on google and ebay..

earlier my horn wasnt working but it turned out to be just a bruned fused, goes to show, most often than not its the simplest solutions that solves a problem

cheers,
erik
_________________
Why drink and drive when you can smoke and fly?
Carpe diem. and if that doesnt work; get drunk!

1980 924 n/a - engine swap begun
1989 Volvo 480ES

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

I think that the earliest wiper relay had a VW part. I would have to look in my old, old parts books to verify.

The current superceeded part has a 924 number.

The VW part from a same period Golf or Jetta will probably work.

As far as the advantage of using a headlight relay over not using a headlight relay, the difference is circuit loading. With a headlight relay, the electrical current (amps) used to power the headlights go through the headlight relay, and not the headlight switch. The switch contacts in the headlight switch will last longer if the headlight switch is not conducting the actual power used by the headlights. This is especially important if you are running high output (high power consumption) headlights. If you have a headlight relay, you don't have to worry so much about burning down your headlight switch and wiring to the headlight switch.

If you have a later car that has the shorting bar, you still have the same headlight switch as some of the cars that used the headlight relay, and you would have to check the wiring, but I think you may be able to switch back to a headlight relay by simply removing the shorting bar and installing the correct headlight relay (SOME MINOR WIRING CHANGES MAY BE NECESSARY).

doomer77 · Joined: 10 Jan 2006 Posts: 266 Location: Huskvarna, Sweden

well, somebody has rewired my headlights in such a fashion that the original switch only turn them on and another swith has been added for raising them, i have no clue how this is wired and i dont know if i wanna dig into it at the moment..
_________________
Why drink and drive when you can smoke and fly?
Carpe diem. and if that doesnt work; get drunk!

1980 924 n/a - engine swap begun
1989 Volvo 480ES

chris24 · Posted: Thu Feb 09, 2006 2:20 am Post subject:

doomer77 · Joined: 10 Jan 2006 Posts: 266 Location: Huskvarna, Sweden

hmm, ill see how it treats the new fuse, if it burns out in a short time ill do something (i paid 30 cents for 5 of them

), but in my experience fuses just blows on cars from time to time for no appearent reason
_________________
Why drink and drive when you can smoke and fly?
Carpe diem. and if that doesnt work; get drunk!

1980 924 n/a - engine swap begun
1989 Volvo 480ES