Wiring diagram for 5.7 GSi PEFS? Or AQ271C? Ideally both?

[bollerwagon]

I´ve dropped my rebuild plans for now and purchased a used TBI engine, knowing this will be another fine mess. One of the challenges is to map the old edgy plug from the AQ271C to the round one of the GSi (model 2000). Also there seem to be more loose plugs on the GSi then I have on the old carb version. Seems like Trim sensor or trim pump go to the engine, before the go to the boat wiring.

Can someone share wiring diagrams for these engines, so I can try to build an adapter?

 

[Scott Danforth]

each of the engines use standard wiring colors

about 10" upstream of the trappezoidal shaped connector is a standard 8 pin harness adapter. just buy a different 8-pin

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

here is the trim wiring for the 271C

 

[alldodge]

GSI

 

[bollerwagon]

Thanks a lot guys! I asked Volvo Penta and look what they sent me! This is something I can work with, I guess...

 

[bollerwagon]

This is off topic: All the topics I start here sadly die soon. Originally I intended to repair my AQ271C, but not understanding carburated engines at all, I gave this up. So I bought a GSI engine! But it was so shitty that my mechanic told me to bring it back. Now I´m trying to build a GXi, I have all accessories, "just" need a new long block. I just hope this project is not turning out as such a train wreck as all other attempts...

 

[alldodge]

Like with all threads,need to post updates or new questions otherwise we think things are ok

 

[Scott Danforth]

This is off topic: All the topics I start here sadly die soon. Originally I intended to repair my AQ271C, but not understanding carburated engines at all, I gave this up. So I bought a GSI engine! But it was so shitty that my mechanic told me to bring it back. Now I´m trying to build a GXi, I have all accessories, "just" need a new long block. I just hope this project is not turning out as such a train wreck as all other attempts...

carb engines are simple and with little maintenance effort will last many many many decades
injected engines are great for a few years, then with a moderate amount of effort can last a few decades

it all depends if you understand the Otto cycle and the inner working of the internal combustion engine. from there, the rest is easy.