Converting a P90 Dogear pickup to P90 Soapbar
When you want to keep your P90 pickups but use them in another guitar.
This is a very simple switch, and great if you want to use your P90 pickups in a new guitar but need to change the covers and baseplates from a dogear style P90 to the alternative soapbar version. This can also work the other way around as well.
Converting a P90 Dogear pickup to P90 Soapbar - Underneath
While essentially the same pickup, the Dogear style differs from the Soapbar version not only through the cover, but also the baseplate underneath. Whereas the Dogear pickup is attached to the body of the guitar through the two lugs "ears" either side of the pickup, the Soapbar is fixed to the guitar via two centre screws with foam pads and/or springs underneath the pickup for height adjustment.
Creamery Classic Handwound '53 P90 Soapbar Pickup
As you can see from my Classic Handwound '53 P90 Soapbar Pickup above, the two centre holes are utilised to attach the pickup to the body of the guitar. If you look at the Dogear style in the firs picture, you'll see the lugs "ears" which are used to screw the pickup down.
Removing the P90 baseplate
Its as simple as removing the fixing screws and noting where & whether the ground wire and braided hookup wires are soldered to the existing baseplate.