Iowa280zx Posted October 4, 2008 Share Posted October 4, 2008 to start off i've searched this up and down for the last week and only found 1 diagram that helps and i have all the wiring breakdowns for 81-83 zx's. I have a 83 n/a 280zx that has a 81 turbo motor in it and i can't get spark for the life of me. I'm using this as a reference point. http://strausz.us/zcar/turboswap/my_schematic.tif My big problem is that i'm not sure if i have to use the existing wire harness from the n/a coil setup or bypass it and run it from scratch. i currently have my y/w and yellow wire from the turbo ecu harness ran and there is a lone blue wire from the n/a setup by the ecu that had a male female hookup and it's ran to the coil. Am i totally missing something here or could somebody walk me through it? It's frustrating me to the point that i'm ready to quit or just sell the car. any help would be much appreciated. Quote Link to comment Share on other sites More sharing options...
aarang Posted October 4, 2008 Share Posted October 4, 2008 Yes, you do need to use the exsisting wiring from the n/a harness. You have the yellow with white wire from the turbo harness going to the igniter. You then need to use the black with the white wire from the original n/a coil to go to the other terminal on the igniter, with the extra lead going through the resistor to the ground terminal on the side of the distributor. The black/white wire from the igniter goes to the positive side of the coil. the blue from the igniter goes to the negative side of the coil. The blue wire from the n/a harness goes to the negative side of the coil as well, that is the tach signal. Hope that helps. Quote Link to comment Share on other sites More sharing options...
Iowa280zx Posted October 4, 2008 Author Share Posted October 4, 2008 on my harness i have a brown wire and a blue one that plugs into the ignitor. I assume they are the same thing yellow and black, just different colors. Quote Link to comment Share on other sites More sharing options...
Iowa280zx Posted October 4, 2008 Author Share Posted October 4, 2008 well i hooked everything up, turned the key over and nothing. After dipping my head inside the driver compartment i noticed a electrical burning smell.... and you guessed it... it was from my ecu. So i assume i'm completely screwed now, this car is giving me a crazy headache. I'm about 99% sure i have a 83 ecu/harness. Would it be easier to just locate and buy a full 81 harness/ecu setup to match my engine and it's cas or say the hell with it and go megasquirt? Quote Link to comment Share on other sites More sharing options...
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