So here's a confusing problem that arose with my 1971 alpine 399er. It lost spark on one side. So did the usual checks spark plugs, wires, caps, and coils. And narrowed it down to being something with the wires or stator. But get this it has spark with the key OFF on both sides. But when I unplug the ignition or turn the key to ON It only sparks on one side. The right side. Please help I was about to sell it when this happened. Thanks in advance.