Wiring through the firewall, easiest place to poke through?

There is the rubber cap with two mastoids on the right which is useful to wire the cables through the firewall.

 

sorry for the highjack but tell me about that nifty little charging volt gauge insert in the last pic!

 

I bought it from aliexpress.

 

i'm impressed that you have a light indicator on the dash for the fog lights, lol.

 

How about the indicators for EV, DRL and Automatic light? Currently, the functionalities of EV and Automatic light are all done.

 

I was wanting to make an EV indicator back in the day. I was planning on etching on and using an LED with my can-view to make everything work but I never really officially started the project. Not that I want to do it now but how did you do this?

 

Because of the different version of the boards I am not pretty sure, in my opinion, you may not need the can-view as a decoder. At least, I don't need it in my case. All you need is a pin for scraping the paint, an IC or transistor as an LED driver, some LEDs and resistors, colored film or paint if you prefer a different color like brown instead of white, red, Blue, green etc. of basic color LEDs. Or, you can buy color-tunable LEDs. You also need the wrapping wires, solder wire and iron. Here is the link below I ever posted on the forum about some records of my EV indicator:

EV indicator

 

Sorry for replying so late.

It is not necessary to install all the wires through the firewall. I poked at one of the two mastoids on the left grommet on the second pic, then only ran the control wire from the fog switch through the hole in the mastoid to the relay on the third pic. In addition, the power cable for the fog lamps comes from the original fog lamp fuse in the main fuse box on the driver's side in the engine compartment. So it almost looks like the original manufactured wiring.

By the way, I forgot to clearly state that the grommet locates on the passenger side of the engine bay where the arrow points in the third photo.

 

I’m working on this now.
Where did you connect to the main fuse box? I have the ground connected to chassis ground. And the NIlight switch is connected to battery power.