Duff Posted October 9, 2015 Share Posted October 9, 2015 (edited) First a little background, I bought this in 1988 as a Scarab conversion. Later sold the 327 and other components of the conversion. Now I am installing a '83 280ZX non-turbo with SUs. Fortunately the previous owner did not butcher the wiring harness other than cut the water temp sensor wire shorter. Over the past few years I completely disassembled the entire car and now I am in the process of rebuilding. Which get's me to my current project of reinstalling the wiring harness. Pictured are 4 wires currently causing my current frustrations. The yellow wire is water temp, the Green/white and one of the black/white wires go along the passenger side rail across the front and over to the area where the coil and ballast resister were located, where they originally terminated. The second black/white wire is about 35 inches long and ends near the front of the engine connected to ??? ( this wire has not been cut) I tested continuity of the g/w and b/w wires came up with the following: The g/w is connected to the tach and the start position of the ignition switch. The long b/w is connected to the tach. The short b/w is connected to the run position on the ignition switch. According to the schematics I have looked at, the short b/w should connect to the ballast resistor along with the g/w . But since it is about 4 feet short it can't. And to add to the confusion the long b/w should connect to the + side of the coil. As of yet I do not have a battery or coil and I am trying to make sure all connections will be correct before I get them . I am using the 280ZX distributer. so will not need the ballast. I have read the discussions about the changes needed to the wiring to make that work. It would seem all I need to do is connect the long g/w wire to the short b/w wire and make the other wiring change between the coil and the IC. But, being curious I am wondering what the short b/w was originally connected to , and how in the world the original set up worked since it seems It had no connection to coil +. Any education will be appreciated. Thanks. Edited October 9, 2015 by Duff Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.