A friend donated this tach to my project. I am wondering if anyone can help with how to wire it. I don't want to fry it. The only thing it says on it is Medallion and "japan". It has five wires..... red, black, white, yellow and green. Hope someone can help. Thanks!
that's a lot of wires. i'll guess black is ground , white is light , green is signal from distributor , red is 12 volt switched power..... that leaves yellow? or maybe it needs a sender? not sure if it will hurt anything to try
my buddy said it worked on his car 20 years ago and he didn't have a sender. Why do I always end up with weird stuff. lol
I tested things out and found that the white and black wires work the light. Pretty sure the black is ground. the question remains, is the green wire for signal or is the yellow wire for signal? The green wire seems to go to the needle. Still not sure.
A lot of the Medallion tachs were used in marine/boating applications, you could check around in that area. Not sure but I think Medallion was bought out by BorgWarner Instrumentation some years ago. Might check with them too.
the archives did not fail! i put one of them in my original '72 Pinto Back In The Day. couldn't bring myself to throw it away when i sold the Pinto, and of course kept the destructions!! enough nostalgia: Model 62-695, L3631 for 6 or 12 volt systems black = ground red = (preferably switched) power green = negative terminal of coil white = lights in 12-volt systems (not used in 6-volt) blue = lights in 6-volt systems (not used in 12-volt) (and if it still works, it's going in the "new" Pinto.)
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