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Two white wires

Reaves76280z
in Electrical

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I am just about to complete the installation of my dash on my 1976 280z. I have almost all my wiring connections completed. There are two white wires located beside the ecu on the drivers  side footwell that I can't figure out where they go. Can anyone give me any help?  Thanks. 

Nissan calls them "Control Unit Checking Terminals".  Shown on the big wiring diagram, by the ECU.  Designed for some sort of test device.  They just hang there, disconnected.  Everybody wonders about them, eventually.

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    Thank you so much!  I've spent hours looking for something they connect too!

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