a 1992 Volvo 940 doesn't have a speedometer cable. the speedometer is controlled electronically.
It's under the front bumper on the drivers side
with copper wire
The Volvo 940 is defined as a Sedan. The Volvo 940 was one of the last rear wheel drive cars from Volvo. You can find more information about the Volvo 940 online from the Wikipedia. Once on the page, search for Volvo 940.
fuel relays & fuel pressor
You don't. When it gets dirty, you replace it.
In a Volvo 940, the horn fuse is located in the fuse box, which is typically found under the dashboard on the driver's side. You can identify the horn fuse by checking the diagram on the fuse box cover, as it usually indicates the specific fuse number for the horn. If you're having trouble, refer to the owner's manual for more detailed information about the fuse layout.
The 1992 Volvo 940 clutch cable will have adjustment swivel nuts on each end of the cable. Turn the swivel nuts to lengthen or shorten the clutch cable.
you do not have a relay for a fan belt. just change them.
Behind the ashtray--google "Volvo 940 overdrive relay" for detailed answers on how to get to it. It's beyond the fuse panel, the white one with black print on the right.
In the 1993 Volvo 940 wagon, the horn relay is located in the engine compartment, specifically in the relay/fuse box near the driver's side. It is typically found on the left side of the engine bay, near the battery. You can identify the horn relay by referring to the diagram on the cover of the relay box, which indicates the specific relay positions.
On the passenger side on the side of the block.It's bottom is pointing outwards.