id bypass "adapter" harness and opt for the full swap harness.
this will do a couple of things for you.
better the odds of starting the vehicle on the first try
will have to rely on the integrity of the OE harness (unknown damage)
backed by phone support
project gets done faster, with less Politically UnCorrect engineering
unnessecary knowledge or what wire goes where syndrome - four or
five wire termination and its done.
custom rod shops will use a swap harness rather than making the OE
fit.. time and money

airdeano