So, I recently purchased this low mileage 9.3 and the 5th bow was not latching. The previous owner had driven it this way for over a year and thought there was some problem with microswitches, but could offer no details. I found the pump was low on fluid, filled it, and found the top would run up and down just fine. But, the 5th bow would still would not latch. I watched and the tonneau motor was latching and unlatching as it moved, and with the top stowed the tonneau was properly latched. I adjusted the 5th bow latches and slid them back a bit so they no longer hit the front edge of the tonneau cover holes. Then the fitting on the "P" line to the top cylinder blew and I figured that may have been age, so I replaced it. Today I checked the 5th bow microswitches on tonneau cover and found 1 of them did not ever close the circuit, so I jumpered it as if the switch was made and tried again. This time the 5th bow got closer to latching, but then it blew the "G" line on the passenger side cylinder! So, here are my questions:
- Do the right and left tonneau microswitches (for the 5th bow being down) perform different functions? I presume that when these switches are closed the motor will lock the 5th bow in place.
- Is there a microswitch which should shut off my pump before it blows my fittings apart? In both cases the swedge fitting let loose of the hose. I find it hard to believe both of these were just coincidence, but it is a 15 year old car with the original hoses.
- Is there anything which tells me what each microswitch should do?