Am I correct to assume that the wiring harness Metra 70-5521 is the same main connector pin-out as the 70-5520 except the 70-5521 has the connector and plug for the sub-woofer included in the kit?
My local shop was out of the 70-5520 so I purchased the 70-5521. They were the same price.
I have an AVIC D3. I purchased 70-5521 wiring harness and the 99-5807 adapter kit.
I have used the search feature on both this site and AVIC411 and nowhere can I find a comparison between these two harnesses.