Best Gromet in CT9A firewall

well not sure if the evos are the same but i ran my amp power cable through the rubber grommet with the harness on passenger side of my cg engine bay.
the grommet had 1 bolt inside and 1 bolt in the engine bay and came out just under the carpet near the dash.

also may be one behind the battery area somewhere.

wish i owned a evo so i could help you out more
 
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