5.7 Switched 12v

[Galvez83]

This question might seem crazy to some but i admit i am not a electrical guy. I ditched the carb after much suffering and installed a Holley Sniper 2. The wiring diagram requieres a "switched 12v red and a pink" to be run to the key. That is unreasonable on a 30ft boat. The question is, what wires can i use on the boat harness to feed these 2 wires. Is the purple that came from the coil an option or the carb choke wire? Engine model is VP 5.7gs PEFS.

Note....the Sniper 2 stays.

https://www.dropbox.com/scl/fi/anai...ey=hs42mqv1zxa6vz6762wegjd6z&st=ilrj64i0&dl=0

 

[Scott Danforth]

the purple wire is a switched 12 volt. that is the ignition.

you may want to understand the ABYC wire colors

Generic Boat Wiring information - Updated Verified

in an attempt to restore information lost due to broken links and photobucket. Here is a thread that will attempt to gather all pertinent generic wiring information starting with the SAE wiring colors as published by the ABYC American Boat and Yacht Council Standards COLOR ITEM...

forums.iboats.com

good luck with your sniper.

 

[Galvez83]

Thank Scott,

Would it be ok to tie both wires to the purple? Or just one and hunt for a secondary ignition wire?

 

[alldodge]

Thank Scott,

Would it be ok to tie both wires to the purple? Or just one and hunt for a secondary ignition wire?

No, the Red wire needs to be connected to full time 12V source. Use the Red/Purple wire which is connected to one side of the 50 amp breaker on the motor

The Pink wire is connected to purple at the coil

https://documents.holley.com/199r12505_website.pdf

 

[kd4pbs]

You may want to run the existing switched supply to a relay which is wired to a circuit capable of lots of amps. These ECMs can draw more current than your original ignition circuit is capable of supplying.
One word of advice switching from carb to a throttle body EFI: Do something about the exhaust crossover passage in the intake manifold. It is very helpful for carburetor performance and very detrimental to TB EFI performance. Some guys will JB-Weld the thing closed.

 

[Galvez83]

Up and running, thanks everyone!