Harness Headaches

jjones752 · 4/8/16, 4:07 PM

Sure could use someone with experience sorting an EFI wiring harness to help me figure out why I seem to be getting juice to the starter solenoid but not much else; after matching up all the connectors I had a bundle of wires that I determined to be the starter solenoid to the button (yellow/blue) clutch switch (black/yellow, which I also wired to the starter button), neutral light (blue) power back to the harness from the ignition switch (red) and a bunch of grounds. There's are also 2 individual wires (one yellow/red and another black/white) with weatherpack-type connector pins that I believe are from the fuel pump relay to the pump. As I said, I have power to the starter solenoid (it clicks after turning on the main switch and hitting the button (after wiring the clutch switch connection as described); I don't have it hooked to the starter yet but I don't seem to be getting juice to or from the fuel pump relay and the power lights on the Power Commander modules aren't lighting up, which at the moment is the only thing that I have to go by.

Any ideas?

jjones752 · 4/8/16, 9:57 PM

OK, let's try this; anybody know anyone in the Indy area that does diagnostics on Mini Sprint electronics?

jjones752 · 4/9/16, 5:17 PM

On its' way to Mike Garvey for a nip & tuck...

4/8/16, 4:07 PM	#1 Harness Headaches
jjones752 Senior Member Race Count This Year: 19 Race Count Last Year: 22 Join Date: Jul 2011 Posts: 2,259	Sure could use someone with experience sorting an EFI wiring harness to help me figure out why I seem to be getting juice to the starter solenoid but not much else; after matching up all the connectors I had a bundle of wires that I determined to be the starter solenoid to the button (yellow/blue) clutch switch (black/yellow, which I also wired to the starter button), neutral light (blue) power back to the harness from the ignition switch (red) and a bunch of grounds. There's are also 2 individual wires (one yellow/red and another black/white) with weatherpack-type connector pins that I believe are from the fuel pump relay to the pump. As I said, I have power to the starter solenoid (it clicks after turning on the main switch and hitting the button (after wiring the clutch switch connection as described); I don't have it hooked to the starter yet but I don't seem to be getting juice to or from the fuel pump relay and the power lights on the Power Commander modules aren't lighting up, which at the moment is the only thing that I have to go by. Any ideas? __________________ Jim Jones Midwest Thunder Speed2 Midget #97 _________________________________________________ Last edited by jjones752; 4/8/16 at 4:22 PM.

4/8/16, 9:57 PM	#2 Re: Harness Headaches
jjones752 Senior Member Race Count This Year: 19 Race Count Last Year: 22 Join Date: Jul 2011 Posts: 2,259	OK, let's try this; anybody know anyone in the Indy area that does diagnostics on Mini Sprint electronics? __________________ Jim Jones Midwest Thunder Speed2 Midget #97

4/9/16, 5:17 PM	#3 Re: Harness Headaches
jjones752 Senior Member Race Count This Year: 19 Race Count Last Year: 22 Join Date: Jul 2011 Posts: 2,259	On its' way to Mike Garvey for a nip & tuck... __________________ Jim Jones Midwest Thunder Speed2 Midget #97