Tune resistor wire for Lucas 4CU injector system

[Clyde Archibald]

Hi
I'm wiring the Lucas system into my p5 and don't have the resistor wire that goes between the single spade connected at the airflow meter and ignition coil, for pulse to trigger ECU.
Taken from the injection post.....
In engine bay there will be a single black/white wire usually with the airflow meter loom, this has an inline resistor MAKE SURE THIS IS FITTED, this then goes to the negative side coil for efi ignition trigger to tell the ecu engine is running and to fire the injectors,
Two black wires with ring tags on, these MUST GO TO A VERY GOOD EARTH !!!!!!!!!!!!!!! (usually the back of the passengers side cylinder head)
I don't know colour length or resistance value etc...any help appreciated

Thanks Chris