We did look into this but it would require wires to connect between the front and back fixtures.
We could not find a good solution to make it work correctly. If anyone has suggestions please let us know.
Only thing I can think of would be a M12 circular power connector and is something I've been considering since all four bulbs simply wash out any "POP" effect from the LED's. And two would suffice to solve any shadowing issues. Although the look is starting to grow on me, minus the pop in the greens and radiance that I used to get out of purples.
Example :
(2) https://www.mouser.com/Search/ProductDetail.aspx?qs=q88POAGIlTFpqJ7EOWtEoA==
(1) https://www.mouser.com/Search/ProductDetail.aspx?qs=ChwaSN6Xm4/n/iWcnYIJzQ==
The problem is this can really start to increase the price of the BOM.
The MegaFit family may have a 4 position product with panel mount options with cable assemblies that will meet the need. I'm just not sure of the UL power rating that would be required off of the HEP ballast to the bulb.
http://www.molex.com/molex/products/group?key=power_connectors&channel=PRODUCTS