Hello
I have a question about outside flood lights. I was wondering how to trouble shoot HID lights. I had one that was shorting out a circuit. All the wires inside the fixture looked fine. Could it be the cap. or starter? Maybe the trans. It is a hubbell(mhs--0400s-268-pcr)with a GE LU400 lamp. What do the numbers and letters stand for exactly? Ive changed out the light with a new one but it is not the same. it is a hubbell (mhs-y400h-468-1) it came with a 400w mvr400/u GE lamp. I thought it would come with a metal halide lamp. Can you replace a mercury vapor with a metal halide? or vice versa? All of the other lights have a LU400 GE lamps. The outside of the building looks ugly with diferent types of lamps.
Any help is greatly appriciated.

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