how hard?

[auhsoj]

i was just wondering how diffuclut it is to install a s54 ballast for hps light and how expensive it would be thanks:S5:

[Shovelhandle]

google Advance Ballast's Pocket Guide to High Intensity Discharge Lamp Ballasts.

This handy little book costs $2 but is available free on line as a .pdf

Shov