Which radio harness should I use to install an Eclipse AVN5435 into a 06 H1 Hummer with a Monsson system? Metra Tech support wasnt much help. They told me first a GMOS 04 and it was wrong than a normal harness 70-2003 which still didnt work.
Any help or suggestions would be appreciated, I know that no one has probably touched one of these yet.
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