I upgrade with a newer part. Most of the sensors/switches on our z's are the same (same readings) as the newer style sensors/switches nissan uses on the newer cars, with the newer better connectors (like the 94 up injector's) Its easier for me because I have access to all the newer connectors/terminals I need to do this. When i rebuilt my engine I put a new style knock sensor with connector, I replaced the coolant temp sensor with a newer style sensor and plug. The new plugs seal MUCH better and are a ton easier to deal with then the old clip style junk that came on our cars. I have replaced a few things with newer style stuff as needed. If I have the chance the change it it gets changed to the better connectors.
Here are a few pics of some things I did. I also took out the stupid sub-harness for the CAS when the recall was done and used the newer style plugs on it also. New style coolant plug harness Sensor and Plug harness Installed New style plugs on CAs with sub harness removed. The new style are so much easier and last much longer.