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+--- Thread: 12 volt to 6 volt horns (/showthread.php?tid=9913)
12 volt to 6 volt horns - Erich - 23-03-2025
Hi All,
In converting my Ulster Rep from 12 volt to 6 volt, I just realized my horns(I have a Rist as well as a Klaxette) are intended for 12 volt. Will they work on 6 volt or will I need to flog them and find a proper 6 volt horn?
Erich in Mukilteo
RE: 12 volt to 6 volt horns - Robert Leigh - 23-03-2025
I think it likely that using a 12 volt horn on 6volts will give poor sound if any. You are better off going the other way where the right resistor might give satisfactory performance.
RE: 12 volt to 6 volt horns - Tony Griffiths - 24-03-2025
I tried a unit similar to this - a 6-volt to 12-volt transformer with a limit of 3 amps - on a set of indicators and they worked perfectly. https://www.aliexpress.com/item/1005002130449922.html?src=google&pdp_npi=4%40dis!GBP!7.62!6.59!!!!!%40!12000018839770812!ppc!!!&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&&albagn=888888&&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en1005002130449922&ds_e_product_merchant_id=108148150&ds_e_product_country=GB&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=17859500389&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gclid=Cj0KCQjwhYS_BhD2ARIsAJTMMQY4u8BBhyOZJdwOx6cQo8ipJN0g5pD1sNFsP4YIEYwKnS-oN4pgapUaApQFEALw_wcB
Others might work include: https://www.ebay.co.uk/itm/405366474034?chn=ps&_ul=GB&_trkparms=ispr%3D1&amdata=enc%3A1EfkwXqqnRFKkRzKwi6RDww34&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&mkscid=101&itemid=405366474034&targetid=2407181292431&device=c&mktype=pla&googleloc=1006886&poi=&campaignid=21690875706&mkgroupid=177083931598&rlsatarget=pla-2407181292431&abcId=10027099&merchantid=5415305724&gad_source=1&gclid=Cj0KCQjwhYS_BhD2ARIsAJTMMQYUOAP5Z4zq-_JsHkByT-izPJAqRCRcgZoS_JPArKK1dCQzcr8f-xoaAl0dEALw_wcB
and: https://www.ebay.co.uk/itm/334366744658?chn=ps&_ul=GB&var=543363450512&norover=1&mkevt=1&mkrid=710-166974-033325-9&mkcid=2&mkscid=101&itemid=543363450512_334366744658&targetid=2274951440814&device=c&mktype=pla&googleloc=1006886&poi=&campaignid=22310127581&mkgroupid=174688136783&rlsatarget=pla-2274951440814&abcId=10221467&merchantid=5366041953&geoid=1006886&gad_source=1&gclid=Cj0KCQjwhYS_BhD2ARIsAJTMMQbUe3mwxra2IWGkTN19euJw5uqpwPkhQ38-Nfn1THf_Lj8rUk5k0pkaAqiMEALw_wcB
RE: 12 volt to 6 volt horns - John Cornforth - 24-03-2025
Hi
Horns tend to take quite a lot of current, so any electronic converter needs to be man enough for the job
RE: 12 volt to 6 volt horns - Graham Barker - 25-03-2025
Hi Erich,
I have a 12 volt horn similar to the Altette horns fitted to the Rubies. This works well enough on 6 volts to satisfy local (WOF/MOT) inspectors. It was not reliable for a while until I discovered that one cell in my 6 volt battery was faulty. With a new battery it's fine. This indicates that these horns have a high current draw, reinforcing John Cornforth's comment.
Regards
Graham