Here is the diagram from the service manual. You can see the two clips that hold the cover in place. I suspect you need to hook in the wide side (bottom) first, and then engage the clips shown in the...
A worn or eroded plug is a sign of something else being wrong. Google what these mean for ideas, for example
https://www.onallcylinders.com/2012/12/20/reading-101-how-to-read-your-spark-plugs/
If...
One of the switches may be faulty. Disconnect them and see if that fixes the issue.
Otherwise, is the battery in the remote ok? Not sure if changing these switches requires you to retrain your keys.
There are lots of posts regarding the TSX in the US. Most point to the solenoid not does having, so brake switch, ignition switch or the solenoid itself. Put a multimeter across the solenoid and see...
A hardware mod to the amp should be possible to fix the volume level to a specified level. I suspect there would be a digitally controlled potentiometer (one per channel) that might be able to be...
I had the same issue. For me it was an aftermarket OEX alternator. Issue went away when I replaced the alternator with a Denso. I reported what the OEX was doing here:...
Given the possibility/consequence of a short, if you plan on duplicating the battery cable I would definitely use a sheath. I would also recommend going through the fuse box (as the original does)....