stevenrankin
Active member
Quick question,
I am having problems with my 78RS's horns.
I see a horn relay listed on one wiring schematic, but not on another.
I assume the two horn system uses a relay whereas the one horn system (not the RS) might not use a relay.
Did in fact BMW RS models in 77 and 78 use a relay for the horns? I have not gone hands on the bike yet, just looking at the wiring schematics in advance and found the discrepancy.
If there is no relay, it means either the horns or a horn is bad or the switch is bad. Not good if the switch is bad as they are NLA. St.
I am having problems with my 78RS's horns.
I see a horn relay listed on one wiring schematic, but not on another.
I assume the two horn system uses a relay whereas the one horn system (not the RS) might not use a relay.
Did in fact BMW RS models in 77 and 78 use a relay for the horns? I have not gone hands on the bike yet, just looking at the wiring schematics in advance and found the discrepancy.
If there is no relay, it means either the horns or a horn is bad or the switch is bad. Not good if the switch is bad as they are NLA. St.
Last edited: