Review on 🚗 RED WOLF Car Door Speaker Wiring Harness Adapter Connector for Aftermarket Speakers - Compatible with Nissan 2004-2019, Infiniti 2006-2018 Models (Set of 4) by Matt Hamilton

Received a package in the post the other day. It fits directly into the stock speaker jacks. I thought everything was ready, so I've been waiting for my speakers until today. I'm working on an 09 Titan with an HF system. So folks when you buy this item pay attention to the wiring to make sure your - and + are correct once the wire harness is connected to your car's speaker harness. I checked to make sure which wire was the + and - on my car's speaker wires. When connected to the wiring harness, they had reversed polarity. In the beginning I had doubts if the schematic is wrong or if the wiring harness is wrong. I had to make a small connection in the car speaker wires with the wiring harness attached to check polarity. I ended up cutting off the aftermarket adapter and replacing it with new breakers I bought from Menards to fix the errors. And a form-fitting separation also fits exactly into the after-sales service column. (I had a 6x9 HF 2-way) The minus was too small to fit in the speakers. In any event, if you purchase this item you must cut the wires on it for it to work. I give it 2 stars because it matches my car harness. Although I did have to make a small connection to the main speaker wire to verify correct polarity. I didn't have to completely cut through the standard strap to make it work. If the manufacturer had made some changes to this product, it could have been much better. Bought to save time but ended up spending more time checking if it was a manufacturer fault. or an error in the diagram. I'm sure some people probably bought this item and used it without double checking, reversed polarity and didn't even notice.