1966 Mustang Ammeter Non working.

6962 Views 4 Replies 4 Participants Last post by Ivy66GT, Jul 13, 2011

Rheinhold

Discussion Starter · Jul 11, 2011

I purchased a new temperature gauge and ammeter gauge, previous post needed assistance, And I have the water temp gauge working now but the ammeter gauge is not working. I cannot for the life of me locate the solid yellow or solid red lines under the dash so I bypassed the wire harness and ran 14 gauge red wire to the solenoid where the factory red wire ran to but as for the "yellow" wire I do not know where it went to... I am running a 14 gauge "Black" wire for the yellow and well what do I hook this wire up to get the ammeter gauge to work? It does not move at all and well It’s brand new and well there are three small screws on the back of the alternator and I don’t want to try hooking it up to these because this 60 dollar gauge is well expensive and I don’t want to burn it out.
Is the 14 gauge wire to big???
Thanks for the assistance.

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Ivy66GT

· #5 · Jul 13, 2011

David is correct about not hooking it up like a REAL ammeter or you can make some smoke. The wiring is really screwy but this thread of mine describes what is supposed to be happening. http://www.allfordmustangs.com/forums/classic-tech/233652-1966-mustang-ammeter-wiring.html

The '65 ammeters were another different kind where there are not even any electrical connections on the back. The wire carrying current to be measured is just looped through the back with no physical connections, just an electromagnetic connection.

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