sigh... How To Read A Sprinter Wiring Diagram (and the steps you've gotta take...)
Vic posted: (trimmed to area of interest):
See the (circled) 8w-10-22? That means you *really want* to go look at THAT page.
... which shows every thing *else* that attaches to that "splice" (S206)
The actual physical "splicing" may not happen at only one point along the wire.
--dick
p.s. personal opinion: the OEM Sprinter "horn" is so pitifully weak.. (could you hear it in a crowed theater, even if it was sitting only two rows back?)(is someone stealing an old VW bug?).. why not install a separate noisemaker in a place that's not so easy to reach (and unplug)? (MB does when they're installing the factory alarm)
p.p.s. this was NOT meant to be a "dump on Vic"
(he knows this stuff)... it's to help future readers who might not