1986 Mustang with 135 Amp Boss alternator and Amp meter?

My alternator died, so I purchased a 135 Amp Boss alternator from AlterStart.

It's installed and working, it took me 2 hours, it would have been quicker, but my Dremel tool died and I was being slow and careful with the install.

After I completed the installation, I found in the documentation that the stock Amp/Volt meter would no longer work. There is a white terminal on the Boss alternator that is not used. Has anyone figured out how to rewire the stock Amp/Volt meter in the Mustang to work with the upgraded Boss Alternator?

Thanks,

Thanks for the information. The stock AMP meter is reading a slight discharge all the time, with the headlights + Driving lights ON it jumps further into the negative. With my Handheld Volt meter I am reading over 14 Volts at the battery though.

I used to have a JCWhittney LCD Clock/Volt meter laying around somewhere, I'll try to find and install it.

Thanks,
Sam