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Old 03-13-2013, 10:41 PM   #109
ls1nova71
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Join Date: Dec 2009
Location: Independence Mo
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Re: 67-72 Electric speedo

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Originally Posted by cjohnson6772 View Post
How about a close up pic of the back where it wires into the new speedo please. Thank you in advance.
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Sure thing. There are 7 pins on the back of the circuit board, but you'll only use 3. They are labled on the board, IGN for ignition power, GND for ground, and SPD for the speedometer input to the gauge. In the pic, the pink is ignition, black is ground and green is speedo input. Also, when you take the original printed circuit off the back of the cluster, if you save a few of the square push on connectors that the gauges hook to, you can solder a wire directly on to them and then the wire will just push on and will be a good connection without having to solder straight to the circuit board.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
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