Where do I buy harness for third party side mirror w/ signal lights? on 1999 Lexus RX300

I'm planning to purchase side mirrors w/ signal lights built in for my RX300. However, it does not come with harnesses. Do I have to bring to a specialty shop in order to have this installed?

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1 answer
You seem to have several problems with this vehicle...

Aftermarket mirrors should be complete ready to install...