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 Post subject: Wiring Help
PostPosted: Sun Dec 17, 2017 8:39 am 
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Joined: Tue Sep 13, 2016 9:06 am
Posts: 59
ECU Model: S80 Pro
Hi,

I'm re-wiring my car, and wondered if someone could cast their eye over the messy wiring diagram I have below.

Image

This is the first iteration of it, and my first ever wiring diagram. So if it's rubbish, or I've made a glaring mistake, I won't be offended if you point it out, nicely, or by making me feel like an idiot :lol:

This is just the chassis side of things, I want to get this nailed before moving onto the engine wiring loom. Use this as a bit of a practice run, so to speak. Get used to crimping, running wires, etc, etc.

In the past I've wired relays with ground switching, so I wire 30 and 85 with a shared +12v, then have a switched ground to toggle the relay. Is that OK?

Thanks


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 Post subject: Re: Wiring Help
PostPosted: Sun Dec 17, 2017 11:22 am 
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Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2848
Location: Norn Iron
ECU Model: No ECU
Ecu will turn on fuel pump, cooling fans are handy too.

Not sure if you're implying that you will have separate switches to turn on injectors, coils etc separately ? No real need for that if you are.

One switch will basically power up ecu/engine related items, normally the ignition key but a switch if you like.

I think the likes of brake lights are often wired live switched.....makes less sense to run both a live and ground, when you can just run a live and ground locally ?


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 Post subject: Re: Wiring Help
PostPosted: Sun Dec 17, 2017 2:03 pm 
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Joined: Sun Jan 27, 2013 6:08 pm
Posts: 245
ECU Model: S60 Pro
Firmware Version: 29
Horn?, Heater Fan?, Rear Screen? Screen Washer? - obviously for road car but useful in a comp. one also. As steve says ignore the coils / injectors (if controlled via an ecu) likewise fuel pump. The wiring for the indicators isn't correct as shown. I used to enjoy wiring.....not now LOL!


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 Post subject: Re: Wiring Help
PostPosted: Sun Dec 17, 2017 4:42 pm 
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Joined: Tue Sep 13, 2016 9:06 am
Posts: 59
ECU Model: S80 Pro
Totally forgot about radiator fans, as well as some form of lighting at the front of the car.

I've not had any comforts in the car for a long time, including a horn, heater, screen wash, etc. It's a circuit car, I find lashings of rain/fog-x is all that's needed.

I need to drill down into the workings of the indicators, it's drawn up a little wrong, I'll have two earth triggers from separate buttons.

Thanks for your input so far :)


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