Sorry about the missing make and model. CTM HS-1000 is the make model need wiring schematic to troubleshoot the problem.

Question edited for clarity, add maker and (what it is)'.
Question moved from Cars and Trucks to make / model category.

Try Monster Scooter Parts, they are the top supplier.

https://www.google.com/search?q=ctm+hs-125+replacement+horn+button

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Here is the manual. I am still looking for the schematic. the manual does have a god troubleshooting section. http://scooterland.net.au/wp-content/uploads/2015/08/User-Manual-HS-589.pdf

ctm mobility scooter manual hs 580 You can download the manual here.

Hi there is a PDF instruction download type in CTM850 mobility scooter schematic. INCLUDES HS-890 or U can get in touch with www.ctmhomecare.com.they might b able to help .good luck

go google and type in workshop manual for ctm mobility scooter model hs-360
the first page has a pdf version for down load and the site is ctm mobility scooter-ctm home care product .inc.
further down the sites is a pdf version download parts manual as well -- ctm home care hs-360 parts

yep you will need two new U1 batteries Hope this helps you

go onto ctm homecare website and into rescource centre then dowloads and click on 740, regards, Bill.

Information on your CTM HS-2800 is here:

http://www.ctmhomecare.com/Products/index_Detail.asp?tStyle=0202&PModel=HS-2800


Your User Manual is here:

http://www.ctmhomecare.com/PDF/Owner_Manual/User%20Manual-2800%20USA.pdf

Hi. Probably the best idea is to google the make and model number, and find the nearest agent to order the parts for you.
Good luck. Neil.

As her to explan to you how she recharges the batteries and how often she recharges the batteris, make sure she is following the owners manual. http://www.ctmhomecare.com/PDF/Owner_Manual/User%20Manual-2800%202800.pdf Explan to her the batteries can NOT Overcharge, Also trace the wiring for breaks or disconnections.