not wrote:
What's this wire? It's unplugged and behind of the et4 light
You might want to see this post:
LX 150 Dash Question
It was about a LX150 but the wires looked just like what I found in a 01 ET4.
I'll quote myself here...
"I can't swear that it would be the same...
but I found one of those in the ET4 I was fixing up for my niece.
Turned out it connects to the turn signals and made a perfect point to connect a Sonalert as a turn signal annunciator.
Put a meter on it and turn on a turn signal to find out."