I think my power lock circuit is draining my battery.

Here’s brief background. After not driving car for a week (which is typical) it would not start up. So I jumped it, let the battery charge and thought all was well. Three days later, same thing. Now I’m thinking it’s my battery because it’s 7 years old, so I buy a new one (Optima yellow top). Everything seems ok, except my power locks don’t work (driver’s side switch, passenger’s side switch and keyless). There are no blown fuses so I figured I’d check into it later and just use the key for now. One week later same thing, the new battery is drained, no lights of any kind. This time I connect up my multi-meter and see there is only 3 volts across my battery. I jump it again and this time I start looking at the power lock system. I pull the 10A fuse on the driver’s side and measure the current (with the car still on). It’s 5 amps, I hit the lock switch and it goes to 0 amps, I hit the unlock switch and it stays at 5 amps. This seems high to me and it appears that a relay somewhere is stuck in the unlock position. I turn the car off and measure it again, now it’s pulling 2.5 amps.

Looking at the circuit diagrams, there appears to be 2 relays (drivers and passenger’s side) on the other side of that 10A fuse. But I can’t figure out where exactly in the car they are located. Are these in the ECU? Can anyone help me figure where to start in the power lock circuit to narrow this down?