JX Suction Traffic Advisor Directional Review

As a result of my tests I determined that this product is ineffective and unreliable... The suction cups don't stick properly, making the lights fall off while driving, and the visibility is poor even in low-light conditions. The only positive aspect of this product is its affordability, but it's not worth the money if it doesn't work when you need it most..

In F150 rear window for a month, still firmly attached. There was a small hardware issue with a 36" road bar (same brand, should have fit) I got from an old car. The groove they put the screws in was larger and easily fixable at the hardware store. Depending on the size (depth) of the bar. Vertical mounting will require some understanding and realignment of the mount, although tilted glass shouldn't be a problem.