Open bonnet and on right hand side where the air filter is its connected to the body there its a tight squeeze you will be better removing air filter cover and its coneected to the body with two flat head screws hope im on about the same thing ...rootsnattyroots good look
http://www.brickboard.com/FAQ/700-900/ElectricalCircuitsRelays.htm#RelayLocations
in the center console, under the Radio
In a Volvo 740, the starter relay is typically located in the engine compartment, near the battery. It is often mounted on or near the driver's side fender, within a relay/fuse box. If you're having difficulty locating it, consult the vehicle’s service manual for specific diagrams and locations.
They are at the back behind the ashtray, look in the gap at the top of the fuses.
pull out ashtray and lighter- realys are behind ashtray
allows power distribution to the overdrive solenoid for overdrive engagement.
i have a 1989 740 and mine is located on under the hood it the green 1 on the side next to the air filter
behind the glove In the relay/fuse panel behind the ashtray. After you remove the ashtray and holder you will need to remove the box above it to access the relay
If you mean the fuel pump relay, it is in the front row on the relay rack, to the extreme left (drivers side in US models.) It is a big white relay. You may download a diagram of Volvo 740 relays from the Internet. I always keep a set of spare relays with me because of failure issues due to overheating.
The ignition relay on a 1992 Volvo 740 Turbo wagon is typically located in the engine compartment, near the battery. It is mounted on the inner fender on the driver's side, usually within a relay box. To access it, you may need to remove the cover of the relay box. Always refer to the vehicle's service manual for precise location and identification.
It's behind the ashtray, it's a black relay and the easiest way to change it is to lift out the fuse box.
Bulb warning failure relay, a big round and red relay, back the ashtray