Where is the horn relay?

 

Just use your middle finger instead. Just had to say it

 

model/year would help. You should be able to google for a wiring diagram or use a dealer parts web site as they often have diagrams. Also try googling for a PDF of a Haynes manual...

 

its a 1993 240, i have the bentley Manuel but it doesn't say anywhere.

 

LOL, unfortunately i need it to pass inspection

 

I don't believe there is a horn relay. digging up my schematics right now...

yup, no relay.

battery -> positive terminal -> ignition switch via red wires..

ignition switch output "X" to fuses 1,2,3 via yellow wire

fuse 2 yellow wire to horn.

other side of horn, black wire to ring terminal behind steering wheel. horn button connects ring terminal to ground via another black wire.

so, first test, ignition on (or in ACC), is there power at the yellow wire to the horn? if NO, then check if there is power at the 'output' side of fuse 2 (thats the right side as you face the fuse block). no power there, then check if there's power on the 'input' side of the fuse 2 (thats the left side). no power there, check the yellow wire at the right/rear most terminal on the right side of the fuse block. no power there, check the "X" output of the ignition switch.

If there *IS* power on the yellow wire to the horn, then try grounding the black wire at the horn, it should honk. if it doesn't, the horn is bad. if it DOES honk, then you need to dig into the steering wheel, which will require removing the airbag (danger danger! proceed with great caution, its explosive...)

 

btw, there IS a full set of 240 wiring diagrams in the back of the bentley manual, albeit they are rather confusing to read.

 

Its nothing electrical, i found out my horn brush is broken in half. Yall have any suggestions on a fix i have found other brushes but they are 40 plus dollars

 

horn brush, as in 'slip contact' part 1330520 ? $15 a this dealer, https://www.volvopartswebstore.com/p...6/1330520.html

 

oh, there's a couple different steering wheels, with different parts :-/