Installing Buick Park Avenue 4 tone horns on Valk. Relay size?

[Gryphon Rider]

I picked up the 4 tone horns from a local self-serve auto wrecker and intend to mount them under the swing arm.  Does anyone know what kind of current they draw so I can size the relay properly?  We're talking 4 car horns.

I think I found my answer.  Buick uses a 15A fuse, so I think a 30A relay should do it.

[rws]

[Disco]

Being as electrically challenged as I am, I can't offer any specific advice other than Big BF put a 40 amp relay on my bike at IZXI to run his quad-horn setup. 

[RDKLL]

Great choice if they sound like the hons on my dad's '92 Roadmaster...they sounded awesome.....thats all I have to add, cause I too am sort of electrically challanged as well

[sandy]

Radio Shack has both 30 & 40 amp relays. They're only 50 cents different in price. Like $6.50 vs $7.

[rhinor61]

Hi guys.
If you only have a 15 amp fuse for the load, then thats your maximum load (amps) the horns can draw. A relay rated higher than 15amps can be used, but for the low cost go with a 40 or 50 amp bosch style relay for under $10. They have more contact surface on the points to prevent arching and pitting when switch on and off.. Or at least that what dad use to tell me.

Nice schematic of the horn circuit posted...  but that using a car style horn relay which will needs to be rated for car like the ones the 4 horns are off of, or install 2 relay and have 2 horns on each. Most cars found have a low and high pitch horn.


Wish I had room for the 4 horn set up... sends a message.. WAKE UP...

John

[Moonshot_1]

Use extreme caution when using these automotive horns while having a passenger on board. Your blissfully ignorant passenger will be instantly capable of a 5' vertical leap when you hit the button. When possible, warn your passenger prior to using the horn. Launching and loss of passenger is possible with these horns.