Why does my pocket bikes head lights turn on when i hit the brakes?

The head lights are off when I hit the break the break light and the head lights turn onWhy does my pocket bikes head lights turn on when i hit the brakes?
I am going to assume this had occurred since working on the bike. it would seem apparent that mis- wiring has taken place so check circuits or work that has been carried out .are we also getting brake light On when switching on headlight?

try and locate where a pair of wires can be inadvertently swapped over.

colour coding on wires from head light etc will be a help .Why does my pocket bikes head lights turn on when i hit the brakes?
Wires going to the brake lights a miss wired to the head lights.