Originally Posted by
ajamesc
lol I mean resistors not diodes. I’ve ordered what’s in the wiring diagram they sent. There answer is the road icons are an after thought. Sensors largely use a 5v voltage from an ecu
They do, but often inputs can be tolerant of a higher voltage anyway even if they are not reading above 5v. In this instance they do not need to read, you're just triggering based on it being higher than 2v for example.
But if they say it needs resistors, I guess you need to do that shit.