Hi Paul,

Were you blowing fuses? F1 or F11?
I'd urge you to go back to the standard Volvo circuit since you have probably
bypassed safety fuel shutoff circuitry.

I'm using the 1989 740 LH 2.2 B230FT here.
#235 The fuel relay is actually two relays in one box fed by F1 25 Amp fuse to
FI relay pin 30

The first sent of contacts is closed by ECU pin 21 providing the ground
to FI relay pin 86/1
This sends:
+12V to #284 AMM pin 5 (AMM gnd = pin 1) to Ground "H"
+12V to #464 RSR coil pin 2 (RSR gnd = pin 1) to Ground "N"
+12 to 2nd relay coil FI pin 85 (Gnd via item #76 Charge Air pressure switch
to ECU pin 17)

The second set of contacts sends:
+12V to RSR contacts that provide:
1. +12V to #376 Ballast resistor (for injectors)
2. +12V to #196 IAC
Both of these items get their ground from the ECU

+12V from FI pin 87/2 To F11 15A fuse for fuel pumps
1. +12V to #210 tank pump (Gnd at "J")
2. +12V to #211 fuel pump (Gnd at "M")

You can see you have more than the two pumps drawing current.

Bill