Also consider installing a solar panel and roof rails at the same time ? If there is wiring in the pop top consider where you want it terminated to . They will need to terminate to a fuse box location . I looked on the forum and found a lot of good advice such as which is the best solar panel , cable cover, isolator, etc and build threads that suited my needs, and supplied all the bits to the company, who bonded the panel to the pop-top roof during the install and terminated their wires to the pre-wired locations . Hope that helps