Fender Lights

[kngtmat]

Anyone know how to get fender lights to work?

Here is my fender light for my Mercury bicycle that I need help to get it to work because I can't get it to work right.

I put the batteries in, the switch is in the on position but it wouldn't turn on, if I move the batteries forward touching the bulb it comes on but the back battery wasn't tounching the tab that is for the on/off switch and the front doesn't seem strong enough to where the batteries can touch the front & back, when I lightly push the front torward the first battery & touch the back battery is on the tab at the same time no matter if the switch is of or on it still lights up.

It's a Darwin Products light Chicago, Il.

 

[gcrank1]

To work it has to complete the power circuit from rear to bulb, with only by the switch making or breaking it. All that rust wont carry power worth a hoot, it has to have metal to metal contact.