1991 saab 900

in article 1jTjh.574441$ snipped-for-privacy@bgtnsc04-news.ops.worldnet.att.net, Greta at snipped-for-privacy@worldnet.att.net wrote on 25/12/2006 16:50:

Check your grounds.

On the RHS of the engine bay, you will find the horns. One is above the windscreen wash tank and the other below. Check over the wiring there - that's the most likely candidate.

Next, check the wiring behind each of the horn buttons. Do all of them fail intermittently? Again, check the grounds, using a multimeter and placing one probe against the ground of whatever you are checking and the other probe connected to the chassis/shell. Using a continuity test, you should find continuity (or no resistance if your meter does not have a continuity function).

Happy hunting :)

Merry Christmas all,

Paul