Author Topic: Speedway Motors Universal Wiring Harness  (Read 851 times)

Offline SoCalMiniFan

Speedway Motors Universal Wiring Harness
« on: November 10, 2017, 07:56:18 PM »
I've been chasing electrical gremlins in Miss Mini for some time now.  I gave up on her high-beams and just made sure I was home before dark.  I am now aware though that the brake lights don't work along with some other things. 

My current non-functioning electronics include:
- No High Beams (they used to at least work if I flashed them but now nada)
- No Horn
- No Interior light
- No Brake lights

I recently hooked up a Tachometer and then things when really haywire, unplugged it and things went back to only 1/2 haywire!

My assumption is my fuse block is old and corroded and I have a bad ground somewhere but I've taken this as my opportunity to do do a full electrical overhaul.

I reached out to the MOASF crew and they were plenty helpful and after some suggestions I decided to go with a Speedway Motors 12-Circuit Universal wiring harness. 

This will allow me to get things fully running along with the addition of:

- 3rd brake light.  Reached out and got a Hella 39 from Daniel Stern Lighting (who by the way is SUPER helpful)
- Converting my turn signals into switchable Hazards.
- Upgraded to Cibie Headlights.
- A radio!  Picked out a simple 4 speaker, in-dash head unit that's Bluetooth capable.

My horn will now be with a relay so that will help it not sound like a dying frog and more like the air-horn that it is.

The wiring kit came yesterday and I pulled it all out and went through it.  I'm really impressed with it and think with a little pre-planning and patience I'll be able to get it all into my car in a timely fashion.  All the wiring is good quality and of appropriate thickness.  The directions seem pretty straight forward.  This harness is based off a GM model but it can be adapted for really any car. 

I went this route because my car is not original and the current wiring has been hacked into, it's ugly and really a 2-fuse system isn't going to work for me with what I hope to get out of this project.  Also the $149.00 price-tag for the harness was pretty enticing.

Here are some photos of the kit.
"If it's not fun, why do it?"

Offline tmsmini

Re: Speedway Motors Universal Wiring Harness
« Reply #1 on: November 10, 2017, 08:20:11 PM »
Just be sure to document everything. If the wires are not pre-labeled, I have a labeller you can borrow.
It has helped me out to have the individual wires labelled as my cars have some intentional modifications. We started with standard harnesses though.
Terry
PS: As John mentioned below if you use the bullets,I have the crimper as well.
« Last Edit: November 10, 2017, 08:45:12 PM by tmsmini »

Offline John Gervais

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Re: Speedway Motors Universal Wiring Harness
« Reply #2 on: November 10, 2017, 08:25:00 PM »
Nice!  It's nice to have relays and extra fuses.

The Hella lamp is great - got mine at Daniel Stern as well, but mounted mine tight against the glass on a pair of 'feet' screwed through the rear shelf so that I can later remove the rear window without disturbing the lamp.  I gave my Cibie headlight trims to Dimitri in Greece many years ago, and threw away the headlights when I upgraded to Wipac Quadoptics.  The Bluetooth is a definite must-have - what stereo did you get?  (My Bluetooth-unit is from Alpine, the front speakers are 3" Polk, the rear 6 x9 are Clarion.)

Now you'll just need time, 'miles' of shrink wrap tubing, millions of connectors - both blade connectors and bullet connectors (I prefer non-insulated terminals and use both male/female silicone insulating boots as well as hard plastic housings for certain connectors), good quality crimping tools for blades and bullets, some sort of sleeving solution (I use PVC sleeves, high-temp 'fiber' sleeves as well as the spiral easy-fit type - depending upon where the wires will run), and some silicone grease.

I can highly recommend Vehicle Wiring Products (http://www.vehicle-wiring-products.eu/), but I'm sure someone in the U.S. has some of the ancillary items.
- Pave the Bay -

Offline BruceK

Re: Speedway Motors Universal Wiring Harness
« Reply #3 on: November 10, 2017, 08:29:49 PM »
Six times more fuses!   ;D  The kit looks very nice.  And the price is incredible.
1988 Austin Mini
2002 MINI Cooper S
2007 Triumph Bonneville

Offline jeff10049

Re: Speedway Motors Universal Wiring Harness
« Reply #4 on: November 11, 2017, 01:26:11 PM »
That harness looks nice, another brand that's affordable I like to use is kwik wire. They print every few inches on every wire what it is. Can't tell if speedway dose or not.

Getting a new electrical harness in is so nice everything will just work. That and cutting out undoing all the past BS is a great feeling too.


Offline BruceK

Re: Speedway Motors Universal Wiring Harness
« Reply #5 on: November 11, 2017, 03:14:28 PM »
I think Id enjoy the therapeutic aspect of soldering and shrinkwrapping every connector just to know it was done right.
1988 Austin Mini
2002 MINI Cooper S
2007 Triumph Bonneville

Offline SoCalMiniFan

Re: Speedway Motors Universal Wiring Harness
« Reply #6 on: November 12, 2017, 10:31:50 PM »
Just be sure to document everything. If the wires are not pre-labeled

Every 6" on every wire and the fuse block is fully labeled too! 

Nice!  It's nice to have relays and extra fuses.

The Hella lamp is great - got mine at Daniel Stern as well.


I saw your write up on your install which is what led me to the light!  I'll probably fabricate some feet for the same reason you did. 

For my stereo I got Pioneer 4x10's to be installed under the backseat kick panel and  Pioneer 4" for my dash,  the deck is an Alpine.  Should be nice and clean and sound decently. 

I think Id enjoy the therapeutic aspect of soldering and shrinkwrapping every connector just to know it was done right.

I learned early on that soldering is quite therapeutic for me so long as I have a good soldering iron! At a previous job I had to do a lot of wiring and lighting of small architectural models and we shared soldering irons amongst the design team.  We had two amazing set-ups and two really crappy set-ups.  Your day would be filled with frustration all day if you got stuck with one of the crappy set-ups.  I ended up buying myself a nice soldering iron and it really makes a huge difference.


I'm hoping to get this project started this week.  I'll post photos and notes as I go.  This project will also include making my dashboard and the rear speaker board so some fun little things along the way.

"If it's not fun, why do it?"

Offline SoCalMiniFan

Re: Speedway Motors Universal Wiring Harness
« Reply #7 on: January 07, 2018, 08:37:03 PM »
It's been slow going on my wiring project but I plugged away some solid hours today. 

Got the fuse block placed and pulled all the wires in the general areas that they need to be.  Now each section will get trimmed to size, loomed, and wired.  I'm also making a custom Walnut gauge cluster and that's held me up a little.  I keep getting ideas and getting sidetracked, but I feel really good about today's progress. 

I'm also working on a blanking plate for the bulkhead behind the Carburetor and have to decide how I want to route the wiring through the bulkhead.  I also realize I need to add some grommets and stuff, this the start, lots of tidying up will take place still.

Here are some progress photos.
"If it's not fun, why do it?"

Offline joakwin

Re: Speedway Motors Universal Wiring Harness
« Reply #8 on: January 11, 2018, 04:15:54 PM »
good wiring harness, I installed one of those into my mini about 6 years ago

I made mine work with mini dash switch, and the column controls and mini ign switch and metro cluster and mini wiper motor
I remember having to add a extra wire for the rear fog light

would have probably been less work to just install a chevy headlight switch vs going with the mini headlight switch

I remember the hazards being a pain in the butt at 1st but I was able to work it and figure it out

I ended up finding the pin out for the mini haz switch
« Last Edit: January 11, 2018, 04:24:00 PM by joakwin »
D16z6 Automatic, 4 wheel disc brakes, deseamed shell

Offline SoCalMiniFan

Re: Speedway Motors Universal Wiring Harness
« Reply #9 on: January 12, 2018, 12:22:05 PM »
I'm plugging along one section at a time and taking my time. 

The 12-circuit harness has a few things I won't be using but I'll find a way to make use of the circuit down the road! 
- Electric Choke
- Electric Fan w/relay
- Power Antenna - though this seems useful possibly!

Things I need to figure out:
- Interior courtesy lights - need to add the wiring and splice in on a switchable constant
- Hazards: the wiring is there but my car is not set up for them so I'll need a switch and other ancillaries to accommodate.
- Grounding points.  Just a few universal ground locations for things like the fuel pump/sending unit, defroster in the rear and then something similar in the front.

I got all new clips and pins and connectors so I'm converting old Mini connectors to these universal ones, only exception is wiper motor and alternator.  The headlight switch I've just snipped the provided connectors and wired to the switches.

I'm also documenting things as I go because lord knows I'm going to be the only one that knows what's going on with the wiring and I'd hate for someone down the way to be stuck trying to figure out what I did. Though every single wire is labeled every 6" as to what it is!

Yesterday I spent sometime working on the gauge cluster.  It's from some scrap walnut I had laying around from another project.  It needs some tweaking but it will house Speedo, Tach, Temp, Oil Pressure.
"If it's not fun, why do it?"

Offline SoCalMiniFan

Re: Speedway Motors Universal Wiring Harness
« Reply #10 on: April 08, 2018, 12:26:52 PM »
Today is the day! 

After my morning coffee I'm headed out to hook up the final rear section of the harness to all tails/fuel/etc. Then roll the car off the lawn to get the fuel pump wired/grounded and front directionals hooked up, the ground is too soft to jack up in place and I'm just not small enough to navigate without a few more inches of work space.  I have a ground block in the dash I need to double check and THEN... I might just be able to turn Miss Mini over. 

Aesthetically I need to wrap some wires, clean up the dash, tidy up under the bonnet but I might be able to spin her around the hood later today!

This winter's weather really pro-longed this project along with my several dash redesigns and other little nuances that popped up since January. 

 71.gif
"If it's not fun, why do it?"

Offline MiniDave

Re: Speedway Motors Universal Wiring Harness
« Reply #11 on: April 08, 2018, 01:04:55 PM »
 4.gif

Can't wait to see the final design of the dash.....
1989 Cooper Racing Green
2009 Clubman S
1969 Jaguar XK-E FHC
2004 Audi Allroad 2.7 TT

Offline jeff10049

Re: Speedway Motors Universal Wiring Harness
« Reply #12 on: April 08, 2018, 01:48:34 PM »
what are you using to for wire loom/protection? I never really cared for the standard split loom but it works. I was looking a product called techflex a braided looking stuff.
 It seems nicer looking than standard split loom they also make a split version of it.I still haven't decided what to use on my next harness.
Also looking forward to the dash.

Offline SoCalMiniFan

Re: Speedway Motors Universal Wiring Harness
« Reply #13 on: April 09, 2018, 11:03:24 AM »
what are you using to for wire loom/protection? I never really cared for the standard split loom but it works. I was looking a product called techflex a braided looking stuff.
 It seems nicer looking than standard split loom they also make a split version of it.I still haven't decided what to use on my next harness.
Also looking forward to the dash.

I found split loom but in a braided/woven style.  I'll include it with pictures later today.  I first tried a solid weaved loom but because I had to keep moving wires and relocating things it became really hard to work with. The Split weave loom I can put on last, make look pretty, and have freedom to adjust anything if needed.

I had some success yesterday in that ALL connections are done, wires clipped, grounds grounded. Unfortunately I went to connect the battery cables I had spark city trying to attach them so I need to trace down whats causing that before proceeding. 

I have a few ideas, the easiest one being I need to check all my switches to make sure everything is in the OFF position.  The other is perhaps issues with my Alternator.

I put in a big beefy 105amp Alternator and I had a friend help on that section but even after connecting it we looked at each other and said "I guess that's right".  But I'm pretty sure I have a wire wrong. 

For fact of ease I might swap in my original 45amp alternator for the time being.

2 meetings today but I'll putz around on the car today between them.
"If it's not fun, why do it?"

Offline SoCalMiniFan

Re: Speedway Motors Universal Wiring Harness
« Reply #14 on: April 19, 2018, 07:45:40 PM »
Fired up my car a few days ago.  Got a solid 14.6 at the battery which makes me feel good about the alternator doing its job.

My car is so good, a little choke and first crank she purred like a kitten after not being started for almost 5 months.

Right now:
Key goes in:
1st click - Ign. light comes on,
2nd click - Fuel Pump engages, accessories (i.e; Heat, Wipers) work.
3rd is crank over to start.

I have a few things that I need to address but seems like the new wiring harness has things mostly dialed in. 

My lights work mostly. 

Issues:
When I flick my directionals on they come on individually R/L respectively but they don't blink, just stay solid.  The dash light comes on to remind me my blinkers are on.

My high-beams work but the indicator light on the dash doesn't come on.

My horn doesn't work.  I got one blip out of it randomly and now it's silent.

Lastly I was poking around the engine bay and I heard a high pitch hum.  It seems that car off, keys out, my alternator is still pulling from the battery, ultimately this will drain it so I've been keeping it disconnected when I'm not using it.

And... just because I don't remember can the blinkers go on without the key in?

Pictures are of the dash with space left for a future Smith's Tach and the cool Split mesh wire-loom stuff I'm using.
"If it's not fun, why do it?"

Offline MiniDave

Re: Speedway Motors Universal Wiring Harness
« Reply #15 on: April 19, 2018, 07:54:37 PM »
For your turn signal circuit - the power goes to the flasher, from the flasher to the T/S switch, then when you move the switch the power goes to the bulbs. The draw of the bulb heats a bimetallic strip in the flasher which interrupts the power to the switch, the strip cools and the contacts make again, lighting the bulbs.......repeat.....till you cancel the switch. Key needs to be on for blinkers to work.

Horn circuit....power goes to the horn, ground wire goes up to the horn button, when you push the button it makes the ground connection and the horn blows. So make sure you have a good ground connection......

The alternator should not hum when the key is off...... you have a wiring issue there, possibly in the ign switch.
« Last Edit: April 19, 2018, 07:57:33 PM by MiniDave »
1989 Cooper Racing Green
2009 Clubman S
1969 Jaguar XK-E FHC
2004 Audi Allroad 2.7 TT

Offline jeff10049

Re: Speedway Motors Universal Wiring Harness
« Reply #16 on: Today at 01:43:22 AM »
if the alternator has a sense and a field wire they might be reversed. the field should be key on power sense and charge line are constant power from the battery.
What type alternator is it?