Beginner/DIY car wiring

[Jacko99]

Hey guys,

I'm doing some DIY wiring in my Toyota 86 to save money and becauseI enjoy working on this kind of stuff.

I’ve got three things I need to wire up:

1: A valved exhaust controller
2: Two powered under-seat subwoofers
3: An LED lighting system

After going back and forth with ChatGPT, I think I now understand the correct way to wire this up but before I start I wanted to run it by you guys and make sure it's solid.

This is my plan:

Run a 60A fused power wire from the battery to a relay (triggered by via a fuse tap from the cigarette lighter or radio fuse)

From the relay, go into a distribution block

Then wire out to:

Each subwoofer (they have built-in fuses)

The LED system (with a 10A inline fuse)

The exhaust controller (with a 5A inline fuse)

Each device is properly grounded

RCA signal and remote turn-on come from the new head unit to both subs

I’ve also attached a wiring diagram ChatGPT generated for me.

Just wanted to confirm:
Does this overall plan look correct and safe?

Is grounding the relay necessary on a relay?

Anything I might be missing?

Appreciate any input trying to learn and do this the right way. Cheers!

 

[brianmoooore]

'Grounding' on 230V domestic or commercial wiring refers to a safety wire separate to the wires that are intended to carry power. On a vehicle, 'grounding' is nothing to do with safety, but substitutes for one of the power wires. In most vehicles the steel bodywork is used for the return negative connection to the battery, and the 'ground' connection of pin 85 of the relay is simply that - the negative connection of the relay coil to the battery negative.