They are at the back behind the ashtray, look in the gap at the top of the fuses.
in the center console, under the Radio
allows power distribution to the overdrive solenoid for overdrive engagement.
pull out ashtray and lighter- realys are behind ashtray
http://www.brickboard.com/FAQ/700-900/ElectricalCircuitsRelays.htm#RelayLocations
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.
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
#1346030
Yes. The 740 and 940 are very similar and share many common parts.
? vacum line ? Fuel pump relay or the knock sensor (normally after 2 miles)