Well, I hope I didn't speak too soon, since I don't know where the propane locker is on your 35-3. If it (or they) are on either side of the helm seat and are similar in size and shape to the 38's two lockers, then these pictures may help. I hope so anyway.
I have two 10 lb. aluminum tanks. The RH side is plumbed to the galley stove/oven and the LH, on the opposite side of the helm seat, is the spare and there is no plumbing there. So all these shots are of the RH side, which is closer to the galley stove anyway. Note that the outboard portion of the locker has an extension with a shelf about halfway down. That extension adds lots of space and that helps fit all the plumbing. I don't know if other lockers have that extension or not.
The propane hose goes through the wall of the locker as shown and then runs up high and forward in the RH lazarette, under the coaming, and then dives down and I think it passes under or perhaps outboard of an ice box to get to the stove. The galley is aft right, same as yours. The solenoid wiring hasn't been traced, but you can see where it exits the locker above the hose.
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