Metra 71-004C Speaker Wiring Harnesses
1992 Mitsubishi Eclipse
Crutchfield Customer Review (What's this?)
These things are great. They save you a lot of time since you don't have to cut and splice you wiring harness.
Pros: Saves time, no need for tools and the ends are already crimped for different terminals to prevent accidentally reversing the polarity.
Cons: There is no dielectric compound on them to prevent corrosion. But you can get that at almost any parts store.