I cant see the pic on my work computer, you know the Fed's

Ill post on other site in refuges

I have a 98 with 454s but don't have that behind mine. Would have to go look behind engine for them.

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Might be a better view.
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Ya yours is still up in the gunwale on. But it is burred in the wires. There is a 2" split wire loom held up with zip ties right above your tab pumps that houses all the wires and harness. (speaker, trim pump, tab pumps, lights, cabin light, engines, ect. All the wires) . No need to rip into it. Just hoping some one has rewired a 33 and remembers it.

But for future reference the split wire loom running up your transom right behind the letter "N" on your boat and then the same approx location on the transom for the port engine. That should be the black ground wire that is 8 or 10 AWG that leads to/from the grounding bus that is located on the lower transom to this "bunches" of wires.