Battery power through firewall on RHD 2007 JLX

As you fit the ring terminal make it into as short a lead as possible 3" or so and fit an in-line 10a fuse, safety first as you don't want that 12v tap rubbing and shorting any where.

Finally had some time to get this done. I tried the passenger side first, but the ABS box (I think that's what it is - thing with all the hardlines coming out of it?) meant I couldn't get a good angle on the grommet, so I pulled the battery out to get access to the grommet on the driver side instead. Used the handle end of a paintbrush to poke through - didn't have a knitting needle to hand!

The red plastic cover on the +ve terminal broke off in my hand, so I zip-tied it back on as I don't want an exposed +ve terminal that close to the bonnet. Connectors are crimped, then soldered, then heatshrink'ed. I've routed/zip-tied the wires to try to prevent any rubbing. Atm I just have them terminated in Wago blocks in the spare DIN pocket above my radio, with a switch & voltage display from my spares box - I'll probably make a proper little switch panel to go there eventually. Or at least that's what I'm telling myself...

Anything obviously wrong/dangerous, please let me know!

Looks good.
Only comment is the cable tied to the battery clamp bracket. It's pushed against the edge of the bracket and could over time wear through the insulation. Place a rubber tube over bracket edge to protect cable or tie the cable to a flat area. Hope you can understand what I am trying to say.
Mike

Yup I understand - I actually tied it to the battery clamp as that metal had a less sharp edge to it than the edge of the engine bay where the wire wanted to naturally rest. I'll wrap something extra around it.

I put the cables into a corrugated pipe. This way I do not have to worry about scratching and martens.

I was looking to do the same thing to fit a USB charger and searched for 'Live Feed' and this post came up, Brilliant!
After faffing around under the bonnet/footwell in the bloody rain, I decided to get the Fluke out and try and find a live inside..This one showed promise and checked the wiring diagram and it is the IGN live from the fusebox (15A).

Feed Wire


Now to find somewhere 'easy' to fit the charger. After scrabbling around in the footwell again, I decided the back of the coin tray needed a 25mm hole in it. DON'T use a cone drill like I did, I nearly went into a harness that was hiding behind it! Use a 25mm hole saw instead.

Hole


Meter/Charger That website link: kek.gg/u/9-67



Done.When you turn ignition to ACC, it shows the state of charge in the Batt, when you turn on the ignition and start the engine it then shows the charge current going into the Batt.
And when you plug something into the USB port, it shows how much current it is using!

Done