I honestly don't remember where I got them, but it'd be something like:
http://www.slickcar.com/reverse-backup-sensors.asp

On 6/3/2017 22:50, Jared Planter wrote:
> Can you share a URL to the set you purchased?

toodle pip,
--
       Dug Smith          | Terry Pratchett: It's almost
(mailto:dug@dugbert.com) |  impossible to ride a rock and roll
(http://www.dugbert.com) |  motorbike and stay on for three verses.