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Showing results for tags 'speedo'.
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Hi. Lance here. I finally got around to rewire my 1971 240z. It had a L28 and a faulty wiring and I'm very confused. So, I found a small metal box on the back of my speedo. It have a Yellow and a Yellow/black wire coming out and a red wire that hooks up with the speedo. I teared apart the old wiring and found the yellow one is connected to the IGN Black/White wire using some sketchy electrical tape, and the Y/B one is routed all the way to 4 big 2x5 connector that connects to the engine bay harness. I'm guessing this is a mix matched setup? Voltage regulator is not wired either. Since I'm rewiring the whole thing I just need to know what the heck is this small box. It outputs red about 11.6 volt when battery is connected via Y, and nothing at Y/B. I searched online and found this image of a 260z gauge that appears to have the identical box. It seems those green wires are the Y and Y/B on mine. I did some research online and found out nothing. Have anyone got a idea of what it does? I'm testing the gauges and the speedo and fuel gauge is not working.
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