This is an OEM and NOS Porsche 914-6 engine wiring harness for a Sport-O-Matic https://pbase.com/image/145543979. The 914-6 engine harness is obviously design to service a single plug engine and a second circuit will have to be added to support the twin ignition of a 914-6 GT. As I make progress with the modifications to this wire harness and the twin ignition, I will continue to post additional photos and details.

My post at the Early911S forum http://www.early911sregistry.org/forums/showthread.php?78273-NLA-OEM-Engine-Wiring-Harness-for-a-Twin-PLug-914-6-GT-Two-Liter-Race-Engine