Coolant leak

I have a coolant leak and have been trying to track it down. I don't see it at the water pump, from the radiator, or around the reservoir. I was able to get some video and a few pics of where it seems to be coming from. All leaking coolant is appearing on the L hand side under hood. Please take a look and hopefully give me an idea if i've found the likely source or a result of the real culprit. The heat works but the other night it wasn't getting hot. I noticed the coolant was low and added some. Now it's low again and heat isn't there.
It's a 1991 G20 with 350 and AC.

Video from inside van (click on it to view)
http://i63.photobucket.com/albums/h151/livewire1568/Van/th_MVI_10651.jpg (http://s63.photobucket.com/albums/h151/livewire1568/Van/?action=view&current=MVI_10651.mp4)

Pic from inside
http://i63.photobucket.com/albums/h151/livewire1568/Van/IMG_10641.jpg

Pics from under hood
http://i63.photobucket.com/albums/h151/livewire1568/Van/IMAG0093.jpg
http://i63.photobucket.com/albums/h151/livewire1568/Van/IMAG0095.jpg


Thanks

Figured out it's the heater control valve. Purchased a new one but can't get the old one out. Any tips? should i cut the hoses or try to save them?

Thanks

Those hoses don't look too bad. Usually the hoses get the most wear right where the clamp goes. If there is extra length, you can trim-off the last half-inch so the new valve an the hose clamp sit on fresh rubber instead of the squished-down rubber from the old valve.

But if in doubt, use a new hose. Typically some universal straight hose will do. It's cheap to buy. You can always buy some extra length with a couple of extra clamps just in case you need to do an emergency repair when you are travelling.

Those hoses don't look too bad. Usually the hoses get the most wear right where the clamp goes. If there is extra length, you can trim-off the last half-inch so the new valve an the hose clamp sit on fresh rubber instead of the squished-down rubber from the old valve.

But if in doubt, use a new hose. Typically some universal straight hose will do. It's cheap to buy. You can always buy some extra length with a couple of extra clamps just in case you need to do an emergency repair when you are travelling.

They are a pain to try and get off. I was afraid to cut them, in particular the one going towards the radiator because of the curve and finding a replacement. But it's so tight in there i have way to wiggle them around at all. i may just have to cut it.

(disregard my question on the other thread, you've addressed it here. Sorry)

Finally got it out and it only cost 2 hoses. I don't see any visible damage compared to the new one. Is it safe to say whatever failed might have been internal?

http://i63.photobucket.com/albums/h151/livewire1568/Van/IMAG0097.jpg
http://i63.photobucket.com/albums/h151/livewire1568/Van/IMAG0098.jpg

Can someone tell me what is the correct heater hose size? 3/4 or 5/8

Just take your new valve with you to the auto parts store. Then just get a hose that fits snugly.

Just take your new valve with you to the auto parts store. Then just get a hose that fits snugly.

is it safe to say it would also be snug enough for the heater core pipes?

Thanks

Edit: disregard this question. Looking at valve itself shows the different diameters