my cruise control on my 850 glt 1995 wagon has been acting up. someone told me to pull the battery and battery holder out and check the vacuum hose/cable o what ever. so I pulled the bat/holder and there are all kinds of wires and things to look at, does anyone know which hose/cable is the cruise control???? thanks Bob

 

The device that is bolted to the bottom-side of the battery tray is the cruise control module. All of the hoses connected to it will probably have to be replaced. Some aren't connected to anything.

There's a "cruise control system.pdf" that may be interest, too. I just can't attach it because it's larger than the file limit. You should be able to search for it and find it. If not, PM me with your e-mail and I'll send it off.

 

Here is the link from the sticky:
https://volvoforums.com/forum/volvo-850-16/cruise-control-not-working-turbo-boost-guage-not-working-29883/