Easy voltage laser modification?

I need to modify a laser to act as a negative voltage (generator?) laser.

The text I read says:
Connect one end of the light bulb to the negative output of a modified laser drive. The modifications of the laser are negative voltage and positive ground.

All information will be welcome

Nowhere near enough information....
1)what laser diode?
2)what driver?
3)What power source?
4)What are you trying to achieve?

Regards rog8811

rog8811 said:

Nowhere near enough information....
1)what laser diode?
2)what driver?
3)What power source?
4)What are you trying to achieve?

Regards rog8811

Click to expand...

The text doesn't explains more about it. The only questions I can answer are 3 and 4
3. 12 Volt 10 AH
4. A cold electricity system

I know you can't post links yet but if you replace the ". " with "dot" you can point us to what you are looking at.

Regards rog8811