Strange looking dash light ?

[Artie in Miami]

While removing an old stereo from my 1986 C20 Suburban, I found a strange looking dash light hanging by it's wire...it has a socket similar to the dash cluster lights...as if it would screw into the cluster...but the wire does not appear to be long enough...and the wire connects to the socket in a very strange way. I am attempting to attach a photo...if anyone can tell me where this connects, I will be eternally grateful !