Im not sure what to charge for this my customer already had some outdoor lighting but it was not working. We had removed it to install decorative retaining wall and we put in a whole new landscape and added irrigation. The trouble with the lights not working was bad wiring blown bulbs etc. I fixed all that. The trouble is I do not know what to charge for reinstalling there existing lights. 6 Path Lights, 11 well lights and they have a 600 watt transformer how would you all charge for this? Plus they want to talk with us about servicing there lights from now on what to charge for a service contract.