Engine Starting Issue - HK

[EK4 hatchback]

[Kaz-kzukNA1: 20/Feb/25 12:18pm
Originally posted in 'Kaz's not so build thread' under the 'NSX Builds (1st Gen)' Forum.
To keep the subject related to the build of specific car, moved to this thread under the 'Technical' Forum.]

Hi Kaz,

Sorry to hijack your thread here. I am having starting issues with my NSX and it is a common issues for many local NSX in Hong Kong. I suspected it is the wiring harness that connect from battery positive terminal to the starting motor. It usually happen after driving in hot summer after shut off the engine for a few minutes. When try to restart the car with the key, all the light on the cluster is normal light up but when turn the key the cluster light would dim and starter not move (starter not turning / not hearing the start turn). If that happen, i open the glass hatch and wait maybe 30-60 minutes for the engine bay to cool down and it usually can start the engine again. I went to one of the NSX garage locally they said to me there is not enough electric to the under dash and i don't understand it. May i know from your experience is that harness the issues? I read the Facebook on T3TEC when they rebuild customer NSX engine, they always replace the engine harness and it is very un-common thing out side of Japan. Is engine harness consider consumable item that need to be replace with the age of the NSX? Thanks

FYI, i had replaced the following 6 years ago due to this very issues starter, ignition switch, fuel pump relay, factory start relay under dash (manual NSX has one), battery terminal ground wire to body but it came back again now.