Metra 70-5510 Factory Amplifier Integration Harness for Select 1986-2000 Ford Vehicles

will this harness protect my new sony CDX-GT55UIW from destruction when I power up? 1991 Navajo

Will this work in my 99 mustang base model

I'm trying to replace the OEM CassetteRadio on my 1993 Lincoln TC w/ premium sound. New radio only has 2 RCA out. Will this work for me?

Not even sure if I need them, yet, but... what kind of crimp caps/wire connectors would I need for these (in gauges)?