Okay, finally went ahead and figured it out. Yes, getting behind the splashguard wheel well is necessary to get to the two outside bolts and removing the parking light bulb. Also removed the front lower grille. Learning from the one side, I limited the number of bolts I had to remove in the spashguard and was able to replace the second light in about 20 minutes. It's daunting until you understand the method. Thanks for the initial insight!