These things are absolute junk. Sure, the end that connects to the factory harness fits and works fine, but the ends that attach to the speaker leads are horribly undersized, at least for the T1675's I ordered. The ends were so small, that I practically had to destroy them in order for them to slide onto the speaker terminals. It's a shame that something so simple that costs $10 no less, is such a waste of time. The only reason I'm giving them 1 star even is because the adapter side works, and because they won't let me give a 0 star review.