Holley/ Starting issue
 

got the motor back in the boat and did my wiring and im having a crank-no start
i think i screwed up my ignition source wire for the Holley.

i have a red/white wire then needs a switched 12v source IN.
i have it tapped into the purple wire - pin 5 on the boat side of the 10pin cannon plug.
i feel like i have this wrong

HELP

https://cimg2.ibsrv.net/gimg/www.off...08670d907c.jpg
https://cimg3.ibsrv.net/gimg/www.off...19686697cb.jpg

Holley HP EFI i haven't yet. ran into this no start last night in the dark so i stopped well i was ahead and thought id ask and make sure this is a 12V switched source. all the wiring diagrams from Merc that i can find leave a lot to be desired

......how do you have the controller wired

The purple wire to the switched red/white wire sounds correct to me. Make sure you have +12v at the purple wire when the ignition is turned on.

it is soldered unless you mean the whole unit in witch case i used the Holley harness - its on a 03 575SCI


the positive and neg are right to battery 1, the one i use to run on


no meter yet. going to do that today that cannon looks like a real &^*( to probe at well its plugged in. went to start it at the end of the night and it it just cranked so i stopped and thought i would check my wire selection

check for fuel also, does the high pressure pump load with fuel pressure ? we need some more info, where did you splice into the purple wire, where does the purple wire end up on the engine harness, what ignition / coil are you running

has fuel, pulled the filter off the intake and can see it on the injection plate
spliced into the purple wire about 3 inches behind the cannon plug on the boat side - not the motor side
ignition/coil is all factory 575sci replacement items. motor ran on the dyno with all this. the only thing that has changed wit it being put into the boat is a diffrent fuel pump - set at same pressure - 48-50 psi the power and ground wires of the ECU and the red/white signal wire