That kit matches many of the OEM connectors however it is not water resistant and aren't sure that it would hold up, if it got too close to the engine. Though my connector was used in the rear where it wouldn't likely see water, I used dielectric grease to somewhat seal up the connector anyway. There are OEM grade connectors that are water resistant and will stand up to engine heat.
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FIrst-Gen plug not Second-Gen...
Whether there's any difference or not, dunno. But the 2nd-Gen diagram shows three wires, not four.
If you don't use an actual automotive grade (water and heat resistant) connector, automotive grade butt connectors would work better for that. (just make sure they don't pull apart over time)
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Make sure that the connector kit supports your wire gauge. The kit's connectors will burn up if too much power is put through them. (or if a poor connection develops) Engineers typically either use a larger connector or double-up on them. (running the wire over two connectors instead of one)
