1227747 Wire Harness

I'm collecting parts to build a harness for a 1227747 ECM, anyone have a guide regarding the correct gauges of wire for the various connections. This will be for marine use so some connectors will be eliminated (RGR, Trans, etc.). Appreciate any insight and apologize up front if this is already covered and I missed it, thanks

I build new TBI harness with 18 AWG TXL wire.

dave w

Sorry to ask the obvious Dave but did that include the two 12VDC battery to ECM wires also, 18AWG? Thanks

The two battery 18AWG wires are spliced into a single 16AWG wire.

dave w