M-250 R1 mounted.

Here is the light mounted on an arm.

Yes, that is one of the two photocells you sent me, Tony. xD Works great! Thanks.

Yesterday I put the 100 watt HPS ballast from the M-250 R2 in here, making the components of this light all GE. I might need a socket extender though...

You also see the NEMA tag from the same M-250 R2 the ballast is from, I ripped the sticker off (long ago) and put it on here, to make the NEMA tag right. I might need to stick on the NEMA tag better as it's not firmly in place.