brake light problem

[Guest]

i have recently had to resolder some contacts on the wiring loom on a cg 125 china copy,jobs been done to perfection.

the problem is no ive re connected all the wires (right way round i think),but now i press the bake pedal or brake lever the rear right indicator activates as a brake light and my tail light goes off.

for the life of me i have checked all the wiring over and over,and cant see the issue.

anyone help at all would be great incase im missing something

[fredc]

Sounds like you have a bad earth

check and clean the connections

chinese bikes are bad for rust

[Stu]

as fred says it sounds like a bad earth somewhere

[Tango]

Yep...classic bad earthing problem. Current can't get to ground through the correct route, so finds and alternate route: ie through indicator.

Worst comes to the worst, run a wire from the metalwork on the light assy to a point nearby on the frame.

[Colin the Bear]

Electricity from the battery goes out through the wires and returns through the frame. (earth). Put a meter on low range resistance to the feed side of the component and to the frame. (Bare metal) You should read the resistance of the bulb.