There is no relay for the horn!
towards the front left end of the fuse box it should be fuse number 12.
If the horn and alarm horn on your 1997 Volvo 850 are not working, first check the fuse related to the horn system, as a blown fuse can cause both to fail. Additionally, inspect the horn relay and wiring for any signs of damage or corrosion. If those components are functioning, the issue may lie within the horn switch on the steering wheel or the alarm system itself. Testing these components with a multimeter can help pinpoint the problem.
http://www.swedishautoparts.com/850/volvo-850-electrical-parts.html Try this website for a pdf. Hope it helps, Troy
The Volvo 850 has two horns in front of the radiator, lift the hood and their they are.
The windscreen wiper relay for the Volvo 850 is typically located in the relay and fuse box, which is found in the engine compartment or under the dashboard on the driver's side. To pinpoint the exact location, refer to the vehicle's owner's manual, as it provides a diagram of the fuse and relay layout. If you need to replace it, ensure the vehicle is off and consult the manual for the correct relay specification.
Check your fuses. There is a separate fuse for high speed.
The horn relay is the same as the wiper relay, it's located under the fusebox under the hood next to the driver side hinge. the fuse box comes out & there's another box attached to the bottom. it has a bunch of relays, the horn/wiper relay is in the top row, 3rd from the left (or 2nd from the right). if you're having trouble w/ the horn, and the intermittent wiper still works, it's probably the horn contacts in the steering wheel.
its located under the fuse box,pop the hood and unscrew the four TORX bits(t-25)and the relay is located underneath the cover
The AC blower relay on a 1996 Volvo 850 is typically located in the engine compartment, near the fuse box. It can be found mounted on the passenger side, close to the firewall. To access it, you may need to remove the cover of the relay box. Always refer to the vehicle’s service manual for specific details and diagrams.
The heater relay on a Volvo 850 is typically located in the engine compartment, near the fuse box. It is often found on the driver's side, secured to the inner fender or the relay panel. To access it, you may need to remove a cover or panel. Always consult the vehicle's service manual for specific details related to your model year.
under the hood of the car unscrew the fuse box and your relays are underneath there, i changed my fuel pump relay last year pretty quickly its relay 103
The Volvo 850 1997 fuel pump relay is under the fuse box compartment, you would need to take out the upper portion of it and then you would be able to easily find it undeath. elyunque000@yahoo.com