I want to replace the wiring harness on my Mark IA. The generator was previously replaced with an alternator and additional wiring was added to the harness. In reviewing the wiring diagrams for Mark I and Mark II cars, they are identical with the exception of the generator and alternator wiring. The Mark II has an 6RA relay and resistor for the ignition warning light. (Also back up lights, switch, etc.) I've looked at the British Wiring Mark IA wiring harness with the added alternator wiring. British Wirings design is basically for a Lucas alternator with the battery connection, a sensing connection and an excitor connection that also operates the ignition warning light. The wiring for the generator voltage regulator and ammeter are removed.
I have not been able to locate an alternator that has the three connections in the British Wiring harness that fits that appears to be able to mount on the tiger without major bracket modification. I can find single wire alternators that will mount, but they do not operate the ignition warning light.
Has anyone used single wire alternator and rewired for the ignition warning light to work or replaced a Mark IA harness with a Mark II? I've heard some of the connectors are different on the Mark II harness.
Thank you,
John
I have not been able to locate an alternator that has the three connections in the British Wiring harness that fits that appears to be able to mount on the tiger without major bracket modification. I can find single wire alternators that will mount, but they do not operate the ignition warning light.
Has anyone used single wire alternator and rewired for the ignition warning light to work or replaced a Mark IA harness with a Mark II? I've heard some of the connectors are different on the Mark II harness.
Thank you,
John