I don't see and "secondary cap". There is a 2" plastic screw cap and that is it.
I just called the dealer and he said that there was actually 2 pumps for this system, one to the windshield and one to the headlights.
Maybe the pump to the headlight is leaking because I do not see any water leaking by the other pump.
Guess how much for the hose for this thing?
hose from pump to heating element $57
hose to left nozzle $51
hose to right nozzle $46
I don't know if I should shell out the extra coin to get the heated hoses.