Found this on the AEM Forum:
The setup on my car uses a AEM 1040 unit with a custom wiring harness used in a 1971 Datsun 510 with a 1975 280z engine . That said, Ford EDIS ignition components are used as they are commonly avalable and would provide the VR signal the EMS would be looking for. A friend who is a tech at a Ford dealer provided a manual that explained Ford DIS systems in great detail as well as a Cam Position sensor from a 2005 V6 Mustang. I won`t go into the particulars of making a EMS for a Honda recognise a Ford VR signal, but it required profanity, a call to AEM and some resistors. The EDIS 36-1 wheel was modified to a 12 tooth wheel, I know the AEM has the ability to use an unmodified wheel but best results in providing a signal the AEM recognises were with a 12 tooth wheel. The cam position sensor was mounted in an Nissan 81 turbo dist using a "tooth" mounted on a custom made dist rotor. No EDIS module is used an AEM Twin Fire takes care of that and an EDIS coil is used obviously as a wasted spark setup. The system works great all the way to the 7200 redline and has several thousand street miles with no ignition hiccups.
http://www.cardomain.com/ride/2071134"