does anybody here know where i could get the t-nozzle that sprays water to the head lights on a 1983 turbo. I have tried to use a water -t but it will just leak all the water out . The original has springs in it to keep the water from running out.

 

Nissan, Napa, your local junk yard, local hose & fittings warehouse...

 

I have seen a tee with a check valve in volvo heavy trucks. I think model WXL and WXR. Its in the dash and is used for the washer nozzles so they wont leak. You might also try a vacuum check valve, the counter guy at you local auto parts will have a field day trying to look one up without Make/Model/Year!