Originally Posted by fudgeass
why would i need the ecu light tho?
i really have no idea about 3-doors lol so any info is greatly appreciated
The ECU light is used by the SECS ecu to communicate to you if there is a fault, so you know to plug in your laptop and look at the fault details.
Doesnt have to be the standard ecu light though, any old light moutned whereever you want will do providing you can see it.