Look at your manual and see which one needs to have constant power for the memory preste to stay and not have to be re-set each time you turn the key off and back on. I believe it will be the yellow wire in your situation.
is there a wire diagram on the top of the unit you want to install?

There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!