Hey George, The horn in my 1989 740 with air bag would not work, so I took it apart and checked the clear plastic contact ring for continuity. The best precaution you can take when working with the air bags,is to dissconnect the battery. Then disconect the yellow connector to the left of the stearing column under the cover panel. Remove the two, or four bolts that secure the air bag to stearing wheel, then ground yourself and disconnect the white connector that goes into the air bag. Once you have that done , remove nut that holds stearing wheel on, then pull off stearing wheel. Take the covers off top and bottom, make sure all wires are disconnected and remove the clear plasic clock spring. That unit has the contacts for your air bag and your horn. After installing new clock spring,grease the contact point on the stearing wheel with a good molly lube, don't connect anything until you put the stearing wheel on, reassemble the rest of the column,install air bag, connect the yellow conn., then reconnect your battery. you will find that your horn will work. Good luck. Sped.

I haven't heard of more than an occasional problem with these- I'd expect a good used wheel is available through most junkyards. Possibly a specialty junkyard like Erie Volvo in upstate NY.
SInce you don't need an airbag, I'm sure one could be found much more cheaply.
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Rob Bareiss, New London CT ::: '86 244DL- 215K, 87 244DL- 230K, 88 744GLE- 198K, 91 244 180K

You can service the little switches if you use a small flat blade screwdriver and gently push in and lift up on the switch. The area to insert the screwdriver is in the slot between the switch and the steering wheel. In my experience, the contacts can be cleaned and adjusted and made to work again. I would DC the battery first before messing around that explosive issur called an air bag. Also, used parts are available. New is not always required.

dick