Buy a heavy duty 9003 wire harness from your local auto store. If you get one from the junk yard, not only will it cost about the same price as a new heavy duty wire harness, you'll end up experiencing the burnout all over again.
While you're at it, replace the other side, too. Trust me on this.
I wish they had these when I first got the Galant back in 99, but now on Ebay, they sell plug and play heavy duty wiring harnesses. Way back then (and apparently you must still be running high wattage bulbs) when HID kits weren't so affordable, the rage was to put high wattage pseudo-Xenon bulbs in their headlights. The only thing this did was fry the wiring harness. However, the point I'm trying to make, on Ebay, they sell plug and play heavy duty wiring harnesses. For now, since your stock harness is fried, you're going to have to splice your stock wires, with the heavy duty wires of the 9003/H4 harness you can pick up at your local auto store.
This is the plugs you're going to need, because you fried your existing stock harness:
It's only $10.88 including shipping from Ebay. I paid that much locally for 1 harness.
http://cgi.ebay.com/ebaymotors/H4/90...01110006r23343
If you never fried your wires, you could have bought these - plug and play:
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