Bill, in reply to your earlier response in this thread and in your email, and as follow-up to my above reply:

The YouTube link you gave now comes up as video deleted -this occasionally seems to happen for reasons I don't understand. A search turned up the same or a similar video of 940 steering wheel replacement. Although extremely similar, it doesn't entirely match my old notes or my vague recollections of doing the job almost 10 years ago. I'm wondering if things changed slightly by the final year '95 I have or if the 940 in the video was not North American or if it's my memory (could well be the latter). I see in my old notes that '93+ OBD for SRS is different from pre-'93, so that indicates a change and may well explain minor differences. Although the narrator says to wait 30 mins to discharge, Volvo states 2 minutes is adequate. The SRS system is designed to maintain voltage for only a few moments after a crash, not minutes, which could actually be hazardous if there was a delayed deployment, and the capacitors will be spec'd to hold a charge accordingly.

The video also uses the steering column lock as the restraint while removing the steering wheel bolt -I quite remember this was advised against. When I removed the steering wheel, it took a lot more force than in the video. Pulling the steering wheel was also much more difficult than in the video. I assume he had everything apart once prior to recording. All my original notes were based on Volvo documentation and my need to check and replace a broken clockspring related to the SRS light, not the horn function. I had online access to the Volvo SRS manual and TSBs at the time, but can no longer seem to find them (possibly on an old .RU site that no longer exists).

I neglected to include from my old FAQ notes that the Torx screws (T30) for the air bag are accessed from behind the wheel with the steering wheel at an angle, as in the video. I always remove the steering column covers, providing access to electrical connectors, but the video indicates this isn't necessary for simply steering wheel removal.

You asked about horn button switch removal. I have not had to do this. The FAQ mentions gently prying the switch cap up. If you look at the switch in parts diagrams, there are 4 small tabs extending from and holding the button cap, 2 on the top edge, 2 on the bottom edge, maybe about 1/4" in from the sides. Using a thin blade to gently push in the two tabs on one edge while you also pinching the cap should allow you to pry up that edge a bit, then do the other edge.

You indicated the horn worked at various steering wheel angles until it finally no longer worked. You didn't mention if only one horn button initially stopped working and it's now both, or if both failed at the same time. If both failed together then the problem is likely at the contact button or in the clockspring. My guess is the contact button. To replace the contact button (p/n noted in above reply), you will likely need to remove both horn button switches to connect the two long wires. Another option would be not to remove the horn buttons and splice the visible wires instead, but my preference would be to do it properly.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now