Leaking water from front passenger side, under dashboard

Well your car is 113 years old it's bound to leak somewhere, I didn't know they made sunbirds in 1900

It is located under the passenger side dash behind the glove box. You'll have to lay on your back in the floor board just to see it. unplug the the connector, then remove the 3 screws from around the motor. You'll need to push the bundle of wires that run across it to the side and almost force it out from there. good luck, you almost need three hands

Your AC drain is clogged. If you look near the floor under the dash on the passenger side you will find a small rubber hose that goes thru the floor board. Take the hose off and clean it out. You will find that it is clogged with dirt. Once it is cleaned out hook it back up under the dash. You will notice that if the car is running with the AC on, you will be able to see water dripping on the passenger side under the car that will mean you cleaned the hose out and it is working.

To be honest, most mechanics hate replacing heater cores because of their location. They are usually on the firewall on the inside of the car underneath the glove box under the dashboard and behind a plastic black cover. If you look under the hood at the firewall on the passenger side, you should see on inlet hose and one outlet hose which should be replaced along with the heater core. They must be removed first before you can remove the heater core. Basically you have to lay on your back on the passenger side Front) floorboard, remove the necessary panels to get to the cover, remove the heater core and install the new one first, then intall the new hoses, reinstall the cover and any panels you removed. Lastly, be sure to bleed and top off the coolant while you run the heater, then check for leaks

Front seating area, passenger side, behind dash, mounted on passenger side of glove compartment cavity

If leaking coolant under dash on passenger side floor broad it's your heater core. Call's for 2.8 labor flat time to remove heater core, in some case's you'll have to recover, evacuate and recharge your A/C system to remove your heater core.Sit under dash on passenger side.

There is a hose on the passenger side fire wall. You may have the water leaking back into the car, and may need an extension piece.

ok your evaporator is leaking, same must be replace with a new one. its not a easy do it yourself tash, it entail removing the dash board.

passenge side down at bottom of engine bulkhead, you need to raise the car up and get under it to get at the drain tube..

The heater core would be the only cause of the souce of water drippng when you add to the cooling system. Check your heater core to heater hose connections first. Do the simple stuff before embarking on a "fantastic voyage". You may just have a slightly cracked hose as well.