Maria, the '41-'46 is changed from my '37, but similar idea. there is the bushing (bearing) with the single wire that goes all the way down the column tube and exits near the steering box and goes from there to the horn. the actual working parts; button, retainer, spring etc. are available at various vintage supplies. I found the best pictures and descriptions on Classy chevy (but not necessarily best price). The horn is wired hot and the horn button makes the ground, in other words, the single wire is not a hot wire but makes ground when button is pushed. If your truck had the original style wheel, the parts should all make sense and fit. Larry
