Dirt bike system amperage

Not open for further replies.

Thread Starter


Joined Jun 14, 2014
I am trying to setup signal lights on my dirt bike because it is a dual purpose 125cc 4 stroke Honda sl125 1971, I have the lights hooked up and working, but if I turn the headlight on at the same time then it blows the 5amp fuse, so I was wondering if anyone knew what the system ampere threshold is, the lights will work with a 7.5 amp fuse so I was also wondering if just letting the amperage be raised a little bit, would it burn out parts really fast? 6v battery.

EDIT: I use 5 amp fuses because I don't know the systems max amperage.
Last edited:


Joined Mar 24, 2008
The owners of All About Circuits has elected not to host discussions of automotive electrical system modifications/enhancements due to safety concerns, the potential of legal ramifications and the possible circumvention of vehicle regulations at the state and federal level.

This thread is against the AAC forum rules, Chapter 6, as seen here:

6. Restricted topics. The following topics are regularly raised however are considered “off-topic” at all times and will results in Your thread being closed without question:

  • Any kind of over-unity devices and systems
  • Automotive modifications
  • Devices designed to electrocute or shock another person
  • LEDs to mains
  • Phone jammers
  • Rail guns and high-energy projectile devices
  • Transformer-less power supplies
This can be found in our Terms of Service (ToS)

Automotive modifications of any kind are strictly forbidden. Therefore, this thread will be closed.

Please try to understand the reasons behind this action, and feel free to browse and use the forums.

You might find answers to your questions in one of these forums:


Another good forum that shares many of the same membership is http://www.electro-tech-online.com/ . Good luck.
Not open for further replies.