ECU clicks, no check engine light

oldmansupra

New Member
May 2, 2010
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Canada
I recently installed an auto harness onto my 7mgte. I converted the reverse lights and neutral start switch. When I turn the key the ECU clicks and nothing else happens. For some reason the harness came with a M/T ECU. Will the M/T ECU work with the auto harness? I had the positive and negative terminals of the battery unplugged while I swapped the ECU.

My 3 questions are:
1) Do I need to reset the ECU?
2) Is my M/T ECU incompatible with my A/T wiring harness?
3) Do i have a blown fuse somewhere?