Acura RDX 2007 draining battery in one day.

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I have disconnected the HFL (Hands Free Link) like most sites recommended but it didn't resolve the issue. The alternator is working as it should, the AC relay has continuity and not short. When i turn the AC switch off, the compressor stops and it switches on as it should when the ON switch is pressed. There are ABS, BRAKE, SH-AWD, and VSC lights on in the dashboard. I don't know if it's related with draining of battery. I'm really confused. I suspect two things; 1. The rear wiper is not working when i use the switch, but when i jumped the switch and ran current directly to the motor, the wiper worked. The mechanic told me the relay is short, but we couldn't find where the relay for the rear wiper is located. We checked both fuse boxes inside and outside the car, but didn't find it. Do you think this rear wiper relay could cause battery drain ? 2. Do you think the Anti-theft module is what might be draining the battery? Please help me.