Re: will bi pin WA bulbs fit into an MR-16 socket
MR-16 lamps have a 4mm pin center spacing, however, they have 1.00mm diameter pins. G4 bulbs such as the Welch Allyn bulbs have 4mm pin center spacing but 0.70mm diameter pins. However, I have a Solux MR-16 10 degree spot lamp that has 1.50mm diameter pins but this is not common.
If you are using an MR-16 socket that accommodates the 1.00mm pins, my guess is that the G4 bulb will be loose to ungripped depending on the tension in the gripping leaves inside the socket. It's worth a try though.
Wilkey
PS, PBJS, those would be the CL912 adapters and I remember your crazy hijinx with those MR-16s. 7x123, right? /ubbthreads/images/graemlins/grin.gif