Wiring loom info
Turbo Mini Forums

I have been thinking of redoing my loom for a long time now as mine let's just say is Dog Shit.

As this will be a little project in its self I want to do it right from the start as I am happy where every thing is in the mk1 now.

So what I am asking is has anyone got a list of the colours that is used in a min?? Also what gauge wire is the best for the job?

I think there is 4 sizes
1.. Mj, gauges and small load stuff
2.. Side lights, fuel pump, general stuff like that
3.. Headlights
4.. Charging cable.

I am hoping to use thin wall wire so I can drop a little weight off it as well i know VWP has a good website but when I have asked them it seemed like he was going safe if you know what I mean.

Thanks for any of your help simon.

Edited by madmk1 on 16th Feb, 2014.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

I used 1mm thin wall for all the normal stuff. I have some pages etc at home with all the standard lucas colours in it. Will try and sort it tonight.

Top man!

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

You need to work out current draw for each item, size the wire at say [plus 20% of max current draw then fit a fuse at a suitable rating to protect the wiring.
Say a pair of dipped beam headlamps are 55w each so 110w the pair.
P=I.V so Power in Watts = Current in amps (times) Voltage in Volts

Work that round backwards and you end up with I=P/V

So nominal current for our example equals 110w/12v

Which equals 9.16 Amps.

To give a bit of headroom add 20% equals 11 Amps.

So you would go for the next size cable up, say 15A cable.

Fuse wise you want the fuse to blow before the cable reaches its max capacity.

In this example you are bang in between.

I would probably try a 10A fuse and see if it lives, if it does not you would have to go up to a 15A.

The main thing to think about really is power distribution and a fuse and relay box.

By doing a good job of this all your wiring is properly fused plus you are using relays to switch any higher currents.

Some may do it differently but if doing a loom from scratch you are much better off to sit down and draw up a wiring diagram first of all and then follow this drawing to physically make it. Also the main fuse/relay box can be wired up away from the car sat at a table or bench which does make things easier.
I also like to try and think about the practicalities, its easy to hard wire stuff in, use through crimps or soldered joints, but then when you come to need to remove a component you are stuck and/or have to chop the wiring.

I've used this fuse box on my car with a separate one to supply the three main circuits.

http://www.polevolt.co.uk/acatalog/Modular...lay_System.html

Then relays for ignition 1 & 2 powering fuse rails, plus relays for head lights, starters etc

I've started drawing up a loom for mine ages ago. See if you can find a coloured wiring diagram online, it's pretty much the same colours throughout the board on minis. I can look at a wire and know exactly where it goes and what it does on 80's looms now, but I couldn't list them all off the top of my head. Look at a Haynes too and study the wiring diagram closest to your needs, helps loads.
I'm also trying to gather a few mini looms for the wiring inside, I have plenty to route where I need it then :)

Edited by Carlzilla on 19th Aug, 2013.

I see what your saying Tom this is why I have been thinking about it long and hard lol.

I have used the loom that's in there to work out whats going where, it's been made in 5 parts, with all the relays in one place and almost every thing is fused. As you say it's so much easier to work on away from the car, as it's down in the lock up. Yes I will seek to find most of the plugs I need. this will be done right from the start. Is there some sort of spread sheet that can be used to work most of this out on? VWP have a a sort of a list next to there wire.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

I've seen things wired in bell flex and speaker wire and all sorts in minis, I'm sure most of you have. And then some wonder why things start setting on fire. I personally don't think some of the mini loom is up to the job, So wiring sizing is of great importance, if in doubt, oversize.

I think I could just keep this updated as I go, as I did not really find much info on here.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Indicator/hazard wiring diagram if it helps at all Si http://www.turbominis.co.uk/forums/index.php?p=vt&tid=521244

On mine the car wiring and the engines wiring is seperate then the cars is split
Flip front/ dash / rear
The flip/ rear are wired colour for colour same as a trailor plug
The dash part is wire as per mini with
My reasoning behind this
I could actually tow / aframe my mini without a trailor board just a male / male adapter from tow car to flip front plug then the wiring of the mini is hooked up like a trailer would be

Wire ratings are as tom says but i went for 50 extra on the ratings

Edit: thats not the reason they are those colours it just ended up that way

Edited by Brett on 19th Aug, 2013.

Yes i moved to the darkside

Instagram @jdm_brett

Edited by Sprocket on 19th Aug, 2013.

Awe crap, lol the attachment management tool didn't work

Here you go

Attachments:

52.35kb

Try looking up Lucas wrist as they built a lot of the looms for British cars and may have all the spec data available.

Own the day

Right lads this is back to the front of my head again lol. So is there any How To web sites for thick Os I can read up on? As I think I will start from Scratch.

I like the look of the fuse setup you linked to Andy I think I will work around that. Have you the flush one?

Just so you boys know I am not really head smart with this sort of thing lol. So any help you post can you dumb it down lol.

Thanks for any help simon.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Simon get yourself one of these and follow the wiring diagram supplied with it.

I found it a really neat solution.

http://www.carbuildersolutions.com/uk/cbs-...t-wiring-module

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

I'll emither you my wiring diagrams tonight

Cool Andy !!

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Simon,

This is probably too late but, having found myself in a similar predicament lately I wanted to share some useful sites.

This gave me a good overview of how to approach the entire system as well as covering some of the fundamentals:

http://home.clear.net.nz/pages/phil.bradshaw/car_wiring.htm

This book was decent:
Competition Car Electrics

http://www.amazon.co.uk/Competition-Car-El...PSCEBXZSBDV8ECF

Let me know if I can help. I am no expert but I've learned enough to give it a go.