Vehicular traffic can be very dense, especially on weekends. Hands-down, the best way to see the lights is to walk. You can park on the adjacent streets, stroll over to 37th, and walk up one side and down the other. If you opt to drive, it's best to approach 37th from Guadalupe, going north, and turn right onto 37th. Dimming your headlights makes the experience better for everyone.
The past few years, residents of nearby Home and 35th streets have added their Edison-approved artistry to the mix. Make a point to see those lights, too.