Holley/ Starting issue
05-16-2019, 09:17 AM
#1
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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
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
05-16-2019, 09:46 AM
#3
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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
05-16-2019, 10:04 AM
#4
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......how do you have the controller wired
05-16-2019, 10:57 AM
#7
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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
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
Last edited by LTZCrew; 05-16-2019 at 11:01 AM.
05-16-2019, 11:30 AM
#8
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iTrader: (6)
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
05-16-2019, 11:34 AM
#9
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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
