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Showing results for tags '280zx turbo swap 73 240z'.
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Hello, I'm currently trying to complete an 81 l28et (with stock electronics) swap into my 73 240z, and I have a few questions about the wiring. Before anyone refers me to the search bar, let me say that I have already gone through every wiring guide I could find, and as far as I have found, everything that needs to be in plugged is, and I have the right wires running to I think the right switched power sources; but all it does is crank. I tried to use this wiring guide (though for an 82-83 l28et swap) to figure out where to wire all of my switched power to, but the wire color combinations for the ignition switch in this picture don't match what I have on my 73 240z, so I'm kind of lost. My Ignition switch wires are B/W, B/R, W/R, B/Y, G/W and look like this I have the yellow wire coming from the 280zx turbo ignition harness plug going to the ignition switch. the two B/W wires (the one for the Ignitor and the one by the efi relay) hooked together going to a 12v source on my ignition switch, and my fuel pump switched power going to a switch wire in the fuse box. (the two B/W wires are in the left, the yellow wire from the 280zx turbo ignition harness plug is in the middle with the black tape on it near the top of the photo) What are the correct wires should I hook these into at the ignition switch? I have the B/W wires going to the B/W and the yellow going to the B/W at the ignition switch, the fuel pump it going to a wire off the fuse box, but I think the problem is that while the car is cranking the power drops down from 12V to around 10 or 9 where I have all of these spliced in. Don't these wires need a steady 12V while cranking (both of the B/W, Yellow, and fuel pump switched)? Does anyone who has done this swap know where to wire these that has worked for them? I know that it is getting strong spark, and I can hear my fuel pumps running when I have the ignition on, but all it does it crank. I believe that the ecu is working, I know this because I hooked up the blue/red wire from the 280zx turbo fuel pump relay (which is controlled by the ecu) to the switched prong on my fuel pump relay and it shut them off after 5sec of priming. Could it be possible that my AFM, CAS, or TPS is bad? I have a 240sx 60mm TB/TPS swapped on, do I need to change any of the wiring for the tps or could that possibly be what it keeping it from starting? Is there a way to for sure test any of this without buying new parts? Could the 280zx turbo's neutral safety switch, possibly be what is stopping my car from starting? Do I need to hot wire it or something? And if so how? Does this resistor need to be plugged into anything? I so, what/where? Thanks, Aaron