I installed the Aeromotive Phantom Dual intank 450’s. Going with -8an Feed & -6an Return. And a couple other goodies. My question, to power the Main pump are you guys using the (-) trigger from factory harness that plugged into OEM fuel hanger. To trigger a relay to power the fuel pump. I have also read people using Pin #50 (fuel pump relay control) from ECU. But what/how exactly are you using Pin#50 to trigger an external relay to power the fuel pump. If anyone has any info/procedure on this. It would greatly be appreciated.

 

Do you have a FPCM?

 

I do, but am not going to be using the FPCM. Going with a Return style fuel system and fuel pressure regulator.

 

Was just wondering.
There should be a FP output on a E38 since some the early ones didnt have FPCM's.

Have a way to test the output from ECM?

 

X1 Pin# 50 D-GN/WH Fuel Pump Relay Control - Primary
X1 Pin#51 TN Fuel Pump Relay Control - Secondary

Don't know if there is changes to be made, before using this as a trigger, but with key on the Pin #50 has (+) power then goes away. It's a little hard to do troubleshooting, because engine is currently out and i dropped the tank to install the Aeromotive Phantom intank setup.