Driver Side Water Leak (Firewall)

I have a leak coming from some where on my driver side firewall. I replaced my door seal and that whole area is completely dry. I traced the water up as high as I could into the sound padding. I have noted that the AC drain appears to work because it consistently has water dripping after I've run the ac.

My question is: how many places can water come in just the one side? Just grommets?

It appears as though it is the far left section and I can't see the area due to how dim it is in my covered parking.

 

Idk, I think if you have a buddy help, they could shine a flashlight at night from underneath or behind wherever, and you look under the dash or wherever it is, and look for light coming through.

 

That's a pretty good idea. I'm leaning towards it being a bad windshield seal. I'll have to take the outer cowl apart to see.

The only grommet I could see was completely bone dry including the wires that went through it. I tore my whole dash apart trying to get an idea of where it was coming from and all I accomplished was replacing the burned out gauge cluster bulbs which were unrelated lol

 

Does it happen only when your driving or just when your parked??

Rust under the windshield??

Seam sealer that cracked and fell off??

Crack in the firewall??

 

When parked, apparently there is a TSB about it. It can be from a few different areas in the front end. I'm hoping it isn't the area where I'll have to take off the front fenders to fix it

 

I may have found the issue. PO drilled a hole in the freakin firewall to put in a self tapping screw for the alarm horn. it is right under the drip edge inside the engine bay. I sealed it as best I could, I'm going to flood the area tomorrow after the sealant cures and hopefully that's it. If anyone has a leak, or it's on the passenger side, I recommend looking at this TSB: http://www.customtacos.com/tech.old/files/tsb/BO02600r2-9704-Leak.pdf

 

Last update: The previous owner drilled a hole in the firewall and put a self tapping screw in it to mount the alarm horn. The screw had no gasket or anything and was loose so it basically funneled water into my interior. Fun stuff.