We're honkin' now! After a few hours sorting the horn relay and wiring layout, the job is completed.
Beep Beep we're coming through.
Pep Boys had a
Fiamm Lo-Tone horn for $14.99. I picked up a mini fuse holder #784667 from NAPA and sourced the horn relay from my VW stash. Minimal investment for major return.
The BMW horn relay, a 12V-30A w/resistor, is part #61.31.373.585. An alternate relay is a 12V-40A w/resistor, VW/Audi Part #141.951.253B. Local FLAPS may have the VW bit.
Relay Terminals and wire routing:
#30 -12V direct battery to fuse to relay. Use 14ga wire,nothing smaller.
#87 -Direct to horn terminal. 16ga wire.
#85 -Extend original wire from horn terminal (green w/black tracer) to this terminal. 16 ga wire.
#86 -Extend original wire from horn terminal (brown w/white tracer) to this terminal. 16 ga wire.
A
new wire is required from horn’s second terminal to a ground. Several good ground spots near the coil.
The horn relay is mounted near the other R65 relays plus the in-line fuse tucks up near the other in-line fuses. All in all, pretty tidy.
After drilling a new mounting hole in the frame's horn plate, the new horn mounted up without needing the supplied metal strap hanger.
Will post add'l photos and info on the Photo Gallery page... soon. PM me should you have additional questions unanswered here.
Monte
