Yeah, I remember this when I was kid working on my old '56 Plymouth (it was 30+ years old then). I dunno, but I'd guess it's would be most likely still common with big rigs if anyone, so Ige probably will know.
'91 Pickup - Imelda
'08 Tacoma TRD - Donna
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein