Ceramic headlight Wiring Harness Recommendations

The wiring harness for the driver's side headlight on my 2000 Subaru Impreza 2.2L "L" sedan has melted. My daughter was on a long road trip yesterday, and I guess 3+ hours of continuous use was enough to melt the horizontal tab that controls the low beam (high beam is still OK).

I want to replace the current plastic harness with a ceramic one. Can I get some suggestions?

I do a lot of soldering and have all the soldering irons, shrink tubing and heat guns needed for the job.

This one on Amazon looks like it's intended for folks who DON'T want to solder:

Hipro Power H4 (9003) Heavy Duty Ceramic Headlight Wire Harness : Amazon.com : Automotive

Here's one that requires soldering (curious why they didn't color code the wires):

Amazon.com: Amico 2 x H4 9003 Ceramic Wire Wiring Headlight Harness Sockets for Car Headlight: Automotive

I want to do this job right once (will replace both sides) but I can't wait forever for shipping.

Suggestions?