924Board.org

[chrizzzie]

yes there's again something electrics which isn't working in my car. I had to replace my ignition key lock and therefore i needed to saperate the steering wheel and after i replaced it the claxon didn't work anymore. does the cable which comes out of the steering wheel be constant under power, i mean if i measure this cable and take the earth from the chassis should there be power on this cable?

Are there more contacts behind the steering wheel which i overlooked?
_________________
Porsche 924, 1977

[chrizzzie]

a little update:

there is power on the cable because when i attach the cable to the iron behind the steering wheel (to the flashing light / wiper swtches device) the claxon works. I understode that the plugs on the wheel make contact with iron when you push on the claxon so i linked the car from the steering wheel with these iron spots put I heard nothing. So the sterring wheels doens'nt make earth.

question: how must the steering wheel make earth?
_________________
Porsche 924, 1977

[chrizzzie]

update 2:

I don't know what i've done but now the horn only works when i turn to the left with the wheel

help!!!
_________________
Porsche 924, 1977

[924guy]

on the wheel youll see a copper ring where the wire attaches, this ring can get dirty and the grease thats usually on them collects dirt, which can prevent the contacts from conducting. clean it up a bit, and hopefully youll be back in business...
_________________
Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha

[chrizzzie]

it is not the copper ring because the wire in the steering wheel has power but it's the earth of the steering wheel. I imagine the back of the steering wheel neets to make contact with metal but where and by which? the steering colom has'nt got earth only the device of the switches but i think that there is no contact with the device and the steering wheel.
_________________
Porsche 924, 1977

[924guy]

IIRC the ground is the copper disc at the wheel. when the horn "button " is depressed, it simply closes the circuit and grounds the relay, which in turn sends power to the horns. if your "beeping" occasionally, it means the ground is intermittant, and making contact when its not supposed to.. you will have some "relay feedback" voltage at the wire, but its really a ground and there is no true power at that point in the circuit.
pull the wheel, and get a test wire, ground one end to the chasis and with the key in the "on" position, touch it to the copper contact at the steering wheel hub briefly, your horn should sound. this will verify your good up to the hub contact.
turn the key off and thouroughly clean the copper contact on the hub, and the ring at the base of the steering wheel itself, and reinstall the wheel. leave the horn pad off.
turn the key to "on" again, and touch your grounded test wire to the wire inside the steering wheel center, again, the horn should work when ever you ground that wire.
clean the contacts inside the horn pad, reconnect the feed wire and horn pad..and hopefully youll be good to go..
_________________
Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha

[Smoothie]

The steering shaft bearing also has to be clean and tight enough. It's part of the path to ground. Apparently you're only getting good contact through it when the wheel is turned a certain way. You can try cleaning the bearing or replacing it or do something like what I did - add a wire from the shaft to ground -

[Ozzie]

I had exactly the same problem.
I did what Smoothie said and it now works just fine.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

[chrizzzie]

ey 924 guy,

I did all the things what you said and it all worked. But I also tried to link the cable in the steering wheel with the 3 iron spots on the steering wheel but i heard nothing. Should it work if i tried this?
_________________
Porsche 924, 1977

[924guy]