ZC distributor re-pinning

So I was talking to a performance shop today and they said that on a ZC swap most people don't know that you have to re-pin the distributor. First of all I don't know what the hell that means, and secondly, why?

I had to swap out plugs since the ZC one was larger than the other end on my DX harness. I just used the DX distributor plugs plugged into the same exact spots. Worked fine and was easy.

i asked the guy who did my zc if he repinned it and he said he had to...here it is...

******** (8:12:38 PM): had to
******** (8:13:04 PM): 7 wire vs 5 wire

If I'm not mistaken, but 2 wires from your dx harness have to be hooked up to your cam sensor by the dizzy, the silver thing thats on the end of the exhaust cam I believe

yeah you either have to re pin it or you can do what i did and make an adapter harness so its plug and play, all you do is cut the plug off your old dist. (or one from a junk yard) and cut the plugs off that come in with the new engine, match up the colors and soder...

http://im1.shutterfly.com/procserv/47b3d931b3127cce8ae203c42a040000001610

...its alot easier than it sounds..

http://www.geocities.com/civiczc/zcwire.html

Thanks a lot guys!