The closest parkings to the gay beach near the lighthouse are:
1.Aparcamiento Municipal Maspalomas by Emursa (cost: 1.65 EUR per hour. July/August offer: 7 EUR for 12 hours).
2. Oasis Parking which is also the parking of Lopesan Baobab. (cost 0.03 EUR per minute the first hour, 0.025 EUR after that, capped at a total maximum of 12 EUR per 24 hours)
3. Or further away, street parking near Riu Hotel in the South of Playa del Ingles or in the streets of Meloneras (harder to find parking but free if you luck out)
4. The ultimate closest is if you stay at the Hotel Faro by Lopesan as it provides parking right next to the lighthouse. Hotel Riu Palace Oasis right next to it also has parking for its customers.