I've decided to add a pair of horns to the bike as a replacement for the loud(ish) but characterless OEM part. I've got one working. That was easy. I just disconnected the existing and took the leads to the replacement. Then I realised it looked easy enough to mount the matching horn (on the other side of the bike) to give a dual tone but I wanted to check the correct wiring. Should I connect that in parallel by extending the two leads from the existing to the new horn? If not what?