Update: I did this a while ago, just finally getting around to posting it. I finished the trunk cover. It fits pretty well, but as you can see the fabric color doesn't match exactly. I made a support using a M8x1.25 threaded rod & a rod coupler, to fit on top of the factory rod.
I also found that it was difficult to see the green LED in daylight, so I installed a DPDT On-On switch, so that I can reverse the red & green indicators. The way I have it now, green indicates the pump building pressure, red indicates spraying. Much easier to see the red in daylight. A flip of the switch changes it back to "normal."


I also found that it was difficult to see the green LED in daylight, so I installed a DPDT On-On switch, so that I can reverse the red & green indicators. The way I have it now, green indicates the pump building pressure, red indicates spraying. Much easier to see the red in daylight. A flip of the switch changes it back to "normal."
