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I went with a universial Painless Wiring kit, wasn't a fun job in the least. I had a friend who is an electrician help it would have been a pita without the help.
I went with the Limited Lectric dash wiring harness. It was a simple "plug n play" procedure. However, I was doing a complete restoration on my '72 and all the interior was out of the car. But the harness was exactly like the original and plugged right in. Good luck.