[Icom] DC Power Cable

[hamradioguy@vermontel.net]

It is said the only stupid question is the question that isn't asked
just prior to "smoking" an expensive radio so here goes.
I have  a DC Power Cable for an ICOM 735.I am looking to use it with my
ICOM 706MKIIG.
I have checked and double checked the polarity of the socket on the 706
and have done the same with the polarity of the end of the 735 cable.I
am convinced they are the same.
I looked up the part numbers for a 706 cable as well as a 735 cable and
they are different
What am I missing?

Thanks...Bert W1DFU