I have a an automatic 90 Legacy Wagon AWD and I realized there's a blank spot where the cruise control button goes. So I went to the junkyard and got the switch and the controls that goes in the steering wheel and hoped that it would work. It does not, of course.

 

I tried looking in the haynes book but it doesn't tell me what I need to get to have cruise control in a car that never had it before.

 

I know I'm missing some stuff. I've been told maybe some sort of ECU and vacuum line and brake cable attachment of some sort?

 

Is this task hopeless?

 

I know a pretty decent amount about cars, just nothing about cruise control since this is the first vehicle I've ever had that actually had that option.

 

Thanks. I searched for this but didn't find much. At least not enough information to get the job done.

The entire cruise module? And assorted wiring and such? It's a major expedition to put in CC.

Well, my '97 had all the wiring in it already. I bought the kit off of ebay, it had (if I can remember it all)

 

CC Ecu

brake switch

clutch switch

master on/off switch

steering wheel control stalk w/ wiring

vacum motor w/ throttle cable