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I've managed to source connectors for the stock engine wiring harness for the early FI S30 and S130 cars. I'm just posting here to see if anyone else would be interested in a kit and I'll order in some extras. The kit will include nine EV1 connectors for the fuel injectors, cold start valve, idle air and thermal switch, a three pin connector for the TPS and the seven pin AFM connector. I'm redoing all the connectors on all my harnesses and I ordered in extra connectors for a few members on the forum who requested a kit. Price will be $50 shipped in US/Canada. There is well over $100 worth of connectors so this is a great deal. If you have a 280Z, 280ZX or engine swap EFI and you haven't replaced the 30+ year old connectors on your car yet you need this kit! A lot of the problems on the car have to do with corroded or loose connectors. Cleaning the male side of the plugs is possible on the AFM, injectors, TPS, etc however cleaning the female side on the connector is difficult and doesn't often last. The reason is that the male connector is easily accessable and are usually solid brass. These can be cleaned/polished to new condition. The connector side is plated and the disimilar metals cause corrosion and the plating is destroyed in the process. Cleaning the corrosion is difficult because they are physically difficult to access and with the plated material missing the base material will quickly corrode and the problems will come back.
A lot of the problems associated with the idle and running of the car are associated with the AFM connector. Often the clip from the connector is missing causing poor a poor connection which can cause intermittant faults which are often difficult to track down. The replacement AFM connector includes the new body and clip as well as new pins to get rid of the many problems this connection causes.
I would also highly recomend replacing the stock negative battery cable with a heavy cable to the starter and one to the chassis. I also recomend a ground cable from the chassis where the battery cable mounts to the ECU and from the ECU to the ground point for all the sensors on the manifold near the Idle air valve. Replace all the connectors with this kit and you have an excellent base for your electronic fuel injection system.
Replacing your connectors isn't going to solve all your electrical problems but it will give you a good solid base and eliminate a lot of potential problems and prevent future problems.
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