Hi all.

Plan: install switch to allow use of stock or added (2) louder horns
via 2 relays.

Stock horn switch (ground) --> SPDT *switch to control negative to 85
of either new relay.

Don't know if using an 87/87a relay would reduce amount of wiring but
here's a quick diagram using 4 pin relays:  http://tinyurl.com/3k2lwx4

*switch would be labelled "Angry" and "Happy" just to confuse the next guy.   ;)

Is there any reason why I shouldn't take power from B+ to supply power
to new horns? i.e. I could sound the horn, key not in ignition.

Neil.

--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines