GM RamJet 350 wiring

[CliffG]

I have a RamJet 350. I have a white wire that I do not know what it hooks up to. A wiring loom that has a heavy read wire (from the battery through a fuse), a purple wire labeled ignition, a gray wire labeled analog tachometer, and an unlabeled white wire. Does anyone know what the white wire goes to?

[dhutton]

A lot of info here:

https://www.bakesonline.com/images/MediaLibrary/Indmar_MEFI4manual.pdf

Don

[CapSS92]

I found this in the manual. Maybe this is it? Didn't specify color codes.

14. You will also notice two tachometer outputs from the harness, tach1 is for a standard negative side of the coil driven tach.
Tach2 is for digital tachometers; this is a 0-12 V square wave output. Select and connect the proper output for your application.

[CliffG]

Thanks for the information.