Stewart Warner Horn Wiring
 

I just acquired an SW horn that works, but I’m fairly sure the coils have been re-wound for 12 volts. It works quite well on 12 volts, but not nearly so well on 6 volts.

I recall reading an article about rewinding horn coils and seem to remember that 6 volt horn coils have about 50 turns of wire and 12 volt coils have twice that.

2 questions -
1. Do the coils appear to be wound for 12 volts ?
2. Can I just unwind half the turns to convert it back to 6 volts ?

Many thanks - Jim

Re: Stewart Warner Horn Wiring
 

Rewiring the ahooguh is not a difficult task. See attached article.

Tom Endy

Re: Stewart Warner Horn Wiring
 

Tom - thanks for y our help - this is exactly what was looking for .

Jim

Re: Stewart Warner Horn Wiring
 

Be aware that in the Stewart Warner horn the screw on the end of the armature holding the ratchet wheel on is LEFT HAND THREADS!

Re: Stewart Warner Horn Wiring
 

That will work but 6V requires twice the current. Best to replace with #20 AWG if you lay on your horn a lot. Could overheat and drip solder.