90 dodge grand caravan id radio parts

:licka: Hi there - my car radio died & my son gave me his radio to replace it - I was able to match up all wires but cannot identify this strap looking hook up coming out of the dash that was originally attatched to the outer case of the old radio with a screw. Can I hook up my ground wire to it? I really miss my music - help?

:licka: Hi there - my car radio died & my son gave me his radio to replace it - I was able to match up all wires but cannot identify this strap looking hook up coming out of the dash that was originally attatched to the outer case of the old radio with a screw. Can I hook up my ground wire to it? I really miss my music - help?
The answer is yes , thats all it did was ground the case of the OEM radio .

Woooohoo! Thank you vipergg for the answer, I luv singing toybox with my six year old but it'll be GREAT to hear music again! Best Wishes!