need help on amp gauge 65 mustang v8

[olrusty65]

i have a 65 mustang coupe with v8 i cant seem to get the amp gauge to work correctly-i took the big wire+that goes to + side of alt off solenoid and ran 1-wire from amp gauge out bolted them together taped them up good then ran other wire from amp out to the pos+side of solenoid where i took the big wire off i got nothing-i was told to put 1-wire on FLD post-and other on pos+side solenoid it reads Neg 5 volts-switched them around then pos+5 volts with motor off can any one tell me the fastest best way to get the amp gauge to work--i had 3 alt checked -ok--new voltage reg-ill try anything let me know . this is aftermarket amp gauge--i have installed 3 diff amp gauges all the same please help. newer battery

[magic bus]

Im no expert but I just had to repair my wiring harness on my 71 f100. I studied the wiring harness linked here:

http://www.fordification.com/tech/wiring_1972master.htm

Take note of the diagram and the ammeter wiring connections. They both T off the main black wire off the alternator. This is known as a shunt or another "path" for the current to flow from the alternator to the battery. It will work if you hook one wire from the alternator "B" battery wire. And the other off the battery side of the Solenoid.

My factory harness was melted from the PO mistake. But the one "yellow" wire going to the ammeter splits off that wire about a foot up the main black wire that ends up at the starter solenoid. Same post the positive battery cable goes to.

So you need one wire near the alternator and the other one further up the black wire ie near the solenoid. Mine has the yellow near the alternator and the red hooked to the solenoid.

Hopefully this makes sense.

[magic bus]

A pic of that circuit.

http://www.fordification.com/forum/down ... =34634&t=1