Howdy! I drive a 1998 NHW10 Prius in the United States. I'm looking to see if I can customize it to support cruise control. Before I get into any of that though, I'd like to confirm if the ECU supports cruise control. As in, if there's a pin that would interface with cruise control, even though it was never sold with it. Thank you!
I recall reading somewhere that cruise was not a feature of the NW10 prototype introduced in Japan, but was added for the export model NW11 brought over for the 2001 model year. You may be out of luck with this one.