I'm not sure you'll find any aftermarket blind spot monitors for the Gen3 Insight. The Insight is built on the current Gen10 Civic platform, which hasn't offered this as an accessory. The Clarity doesn't offer it, and the current Accord EX is the lowest level sedan trim that has it. I did see aftermarket sensors on eBay for the 2015 Civic and this video for aftermarket sensors on a 2016 Accord - maybe one of those would work? Or perhaps looking for OEM or aftermarket BSI sensors for the Accord and applying them to the Insight? But from what I've read/seen so far, I think you'd be among the first to try any of these on the Gen3 Insight...I've installed aftermarket BSM to my 2015 Toyota RAV4. But I cannot find one for Insight.