westach fuel pressure gauge install

[Cummins Cowboy]

What is the best method of hooking up the sender to the injection pump. Another member Took an A/C test line and simply hooked it up to the schrader valve and then to the sender, but i can't seem to locate one of these hoses at any auto parts store or even a place that makes custom hoses. The schrader valve itself looks like it has a rubber seal behind the part you put a wrench to, will I be able to just unscrew the schrader valve as a unit and screw in a grease gun hose or something similar?? oh BTW my truck is an '02 ETH