Well, the title pretty much says it. I've read through the very limited information provided with my FAST EFI system installed by BluePrint Engines and the somewhat better, but still confusing wiring instructions that came with the Ron Francis harness. Before I start cutting and splicing and praying, I'm asking for help. I currently have the RF Sending unit harness and EFI harness with no connections other than my water temp sensor and oil pressure sensor from my gauge kit that I connected to the sending unit harness.
My FAST EFI is installed and the harness has the following wires to connect:
Red - Battery Positive
Black - Battery Negative
Computer plug
Pink - 12v Switched
Blue - Fan Relay
Gray - (can't read the print)
Fuel Pump Control
- Three pin weather pack connector with:
Red, Green, and pink wires
- Green (fuel pump relay)
FAST Fuel Pump Relay Harness:
- Four pin weather pack plug with
- Red, Green, Black wires and a blank spot
- FAST also provided an additional 4-pin weather pack connector (I assume it should replace the three pin?)
O2 Sensor plug (sensor supplied)
My Ron Francis harnesses:
EFI Harness
- Orange (coil or EFI)
- Blue (EFI Crank)
- Purple (Coil / Tach)
- Green (Speed sensor)
- Gray (Speed sensor)
Sending Unit Harness:
- Tan (Electric choke)
- Green (Fan Thermo Sensor)
With the exception of the battery and 12v switched wires, I'm not sure what goes where. With power connected, my fuel pump runs in the key on and crank positions with just the RF harness setup as it came (nothing cut and no FAST EFI connections made to anything).
I could really use some guidance from those that have made this setup work. I've reached out to both BluePrint and FAST and received no help.
Thanks in advance,
Dave