Electrical Need help identifying this box

[ateyfivegeetee]

85 mustang gt won’t crank noticed some broken wires on the harness to this box but what is it? What’s it’s function? Passenger side next to the battery.

 

[General karthief]

Voltage regulator? Newer model alternators have internal regulators
I'd be concerned with that gob of taped up wires too.

 

[ateyfivegeetee]

I though so thank you! What’s the function?

 

[evintho]

I though so thank you! What’s the function?

From Google:
The voltage regulator works with the alternator to make sure that electrical output stays within 13.5-14.5 volts and that the battery stays charged.

 

[manicmechanic007]

Internal regulators came around in 86 or 87
That's why his 85 has a external regulator
ateyfivegeetee you should replace the alternator harness
Unhack the wires best you can
AZ et al. can test your regulator