jimistone
long standing member
That's a split. Coil Split splits the coil from humbucker to single. A "tap" just takes a milder reading from deeper within the winding. It taps into the signal.
Oh ok. I think I had some coil tap pickups. They were Duncan JB quarter pounders and had 3 wires...a ground, a hot, and a hotter hot. You could wire them to be kind of tame or really hot.