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David_Doan
04-23-2013, 01:04 AM
So after paint, my next step is the wiring harness. I need to start sourcing all the stuff. The original one is cut out and gone. I'm going to make a new one from scratch with appropriate fuses, relays, and wire gage. There will be enough changes that it does not make sense to buy a new one and modify it. Here's a short list of the significant changes from stock:



Negative Ground
Alternator with internal regulator
Electric fuel pump
Front tilt - new routing for headlight and front signal light wires
Horn and lights on relays
Add 12V ACC socket
More than 2 fuses
Electric Tach
Maybe electric cooling fan


I will keep everything about the wiring project in this thread for reference. My goal is to keep it neat and have as few wires visible as possible.

5/8/2013 Update #1: Here's the 1st document - Functional Diagram

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I started with a state table of what should be on at the combinations of O, S, H and the Key. Then laid out what devices share fuses and relays.

Thanks,

David

David_Doan
04-23-2013, 02:31 AM
I stumbled across this place tonight - https://www.wiringproducts.com (https://www.wiringproducts.com/index.html) - They seem to have just about everything at resonable prices.

These (https://www.wiringproducts.com/contents/en-us/d530_toggle_switch_panels.html) are expensive, but very cool

Bayless
04-23-2013, 10:49 AM
When I answered your PM, I was thinking of a stock harness. Sorry. Anyway, I got all my supplies at Rhode Island Wire (https://riwire.com) and British Wiring (https://britishwiring.com). Both have all the proper multi-colored wire for British cars. If you go with solid colors only as offered by the above, you will surely have some conflicts and confusion, sooner as well as later. Proper materials are not cheap but the amount of work and worry involved in building a harness from scratch will pretty well overshadow the cost anyway.

Trevor Jessie
04-23-2013, 10:57 AM
When I made my custom Bugeye harness I went with mostly standard Lucas colors. There are a few exceptions, but most anyone that knows British cars would be able to sort it out.

bug_sixty
04-23-2013, 11:05 AM
that's a copy for me...I'll pay you for one except not in front tilt dress..

Jim_Gruber
04-23-2013, 11:09 AM
British Wiring. Wire sold by the Meter that is correctly color coded. Think about the next owner of this car or 2 or 3 owners down the road. And document what has been done to pass it on. Don't use a single color wire please for the sake of a future owner and troubleshooting for yourself. I do believe British Wiring can accommodate the changes you are thinking about making. Now the $ cost I can't speculate but the wire I purchased from them was top notch and they were nice folks to deal with.

Jim_Gruber
04-23-2013, 11:09 AM
Quick disconnect for front harness is a simple 6 way trailer plug.

David_Doan
04-23-2013, 11:15 AM
Quick disconnect for front harness is a simple 6 way trailer plug.

I'm going to route the wires so that you can open the bonnet without unplugging anything. I will use the trailer plug or similar so the bonnet can be easily removed.

smaceng
04-24-2013, 01:39 AM
Here is what I did to my BE. If you would like full documentation, PM me. Scott in CA

2694726948

BillW103
04-24-2013, 10:48 AM
This is what I did with the electrical. It all hinges on the fire wall and drops down for access. Not very stock but works well.

2694926950

Talonaer
04-24-2013, 12:19 PM
I have the exact same set up in my 'frogeye' at the moment and the original harness that has been changed around looks a right mess.

Do you have a wiring diagram for your plans? I know very little about relays and such like and such a plan would be really appreciated rather than having to reinvent the wheel per say!

sebringsprite.blogspot.com (https://sebringsprite.blogspot.com)

David_Doan
04-24-2013, 05:28 PM
This is what I did with the electrical. It all hinges on the fire wall and drops down for access. Not very stock but works well.

2694926950

I like that! I'm still trying to decide how I want to do mine. I was thinking something similar to yours or a fuse/relay box in the location of the old regulator, or a fuse/relay box under the passenger side blanking plate.

David_Doan
04-24-2013, 05:32 PM
I have the exact same set up in my 'frogeye' at the moment and the original harness that has been changed around looks a right mess.

Do you have a wiring diagram for your plans? I know very little about relays and such like and such a plan would be really appreciated rather than having to reinvent the wheel per say!

sebringsprite.blogspot.com (https://sebringsprite.blogspot.com)


I do not have a complete one yet, but I will post it on my blog and here when I do. My target for completion of the car is June 29. I want to take it to the Texas Dream Cruise (www.texasdreamcruise.com) in Frisco, TX. It is going to be tight since I travel 3-5 days a week.

Talonaer
04-26-2013, 06:48 AM
Thanks David. That would be really really appreciated.

I think Im going for a centre console with an ammeter or volt meter in it, and to have circuit breakers and toggles for the lights there as well. The twisty ignition switch light system I have is a bit worn and needs replacement.

62Migit
05-06-2013, 01:36 AM
David,

I also decided I'm making too many modifications to bother with an original harness. I'm rewiring my Midget using wiring from Jegs (https://www.jegs.com/p/JEGS-Performance-Products/JEGS-Premium-Automotive-Wire/758464/10002/-1). The wire is very high quality, I have no complaints. I'm using F-crimp (or "open barrel") connectors which crimp both the wire and the insulation. I purchased connectors from DigiKey (https://www.digikey.com), which easily lets you choose gauge and connector size. I looked at fuse and relay blocks at my local stores and I wasn't impressed, so I'm mounting relays to a sheet metal bracket under the dash and using in-line fuses to keep things simple. Hope this helps. :-)

Mark

David_Doan
05-06-2013, 02:11 AM
David,

I also decided I'm making too many modifications to bother with an original harness. I'm rewiring my Midget using wiring from Jegs (https://[URL]https://www.jegs.com/p/JEGS-Performance-Products/JEGS-Premium-Automotive-Wire/758464/10002/-1). The wire is very high quality, I have no complaints. I'm using F-crimp (or "open barrel") connectors which crimp both the wire and the insulation. I purchased connectors from DigiKey (https://[URL]https://www.digikey.com), which easily lets you choose gauge and connector size. I looked at fuse and relay blocks at my local stores and I wasn't impressed, so I'm mounting relays to a sheet metal bracket under the dash and using in-line fuses to keep things simple. Hope this helps. :-)

Mark

Thanks Mark, I'm leaning the same direction as you. i was hopping to find a fuse/relay block like this:

https://i142.photobucket.com/albums/r96/joe002/Jeep/Auxiliary%20Electrical/IMG_6910.jpg

David_Doan
05-06-2013, 02:17 AM
David,

I also decided I'm making too many modifications to bother with an original harness. I'm rewiring my Midget using wiring from Jegs (https://[URL]https://www.jegs.com/p/JEGS-Performance-Products/JEGS-Premium-Automotive-Wire/758464/10002/-1). The wire is very high quality, I have no complaints. I'm using F-crimp (or "open barrel") connectors which crimp both the wire and the insulation. I purchased connectors from DigiKey (https://[URL]https://www.digikey.com), which easily lets you choose gauge and connector size. I looked at fuse and relay blocks at my local stores and I wasn't impressed, so I'm mounting relays to a sheet metal bracket under the dash and using in-line fuses to keep things simple. Hope this helps. :-)

Mark

Just looked at your blog... We've done a lot of the same work and even have similar blogs. Saw a post about your heater valve leaking. Looks like your heater is gone, if its going to stay gone you can just pull the heater valve and put a blanking plate on it.

dklawson
05-06-2013, 07:33 AM
Since the discussion started with making your own harness from scratch I thought I would mention the product linked to below, split braided harness cover:
https://painlesswiring.com/webcatalog/Keywordsearch.php?pageNum_FindKeywordrst=43&totalRows_FindKeywordrst=585&partsearch=

Two acquaintances of mine have used the products above to cover their homemade wiring harnesses. Being braided it retains part of the early car look while the split in the braid allows for installation over the harness.

Trevor Jessie
05-06-2013, 07:53 AM
I've used a similar product from Jegs, and I like it.

Jim_Gruber
05-06-2013, 08:37 AM
Same here from Jegs. Not cheap but really worked well.

David_Doan
05-06-2013, 08:41 AM
Thanks Mark, I'm leaning the same direction as you. i was hopping to find a fuse/relay block like this:

https://i142.photobucket.com/albums/r96/joe002/Jeep/Auxiliary%20Electrical/IMG_6910.jpg


I found this one for sale, but it uses special relays and special connectors.
With a little more searching, I found these on Amazon (https://www.amazon.com/gp/product/B0032JMKZY/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1). 10 relays and 10 connectors for $17 shipped

https://ecx.images-amazon.com/images/I/313pqqJXpvL.jpg

Not as slick as my original thoughts, but generic 5 connector relays that can be bought anywhere.

BillW103
05-06-2013, 01:18 PM
I would loved to have that block when I did mine. I looked every where for somthing like that. I used the single relays but used conectores for each wire. I found the plugs to be to big.

Trevor Jessie
05-06-2013, 01:58 PM
I used something similar to this:
https://www.centechwire.com/PDP-1B-High-Tech-Fuse-Panel-PDP-1B.htm

You may want to keep your relays close to the device they are switching to limit the length of wire that is making the big draw.

Talonaer
05-06-2013, 05:00 PM
Just looked at your blog... We've done a lot of the same work and even have similar blogs. Saw a post about your heater valve leaking. Looks like your heater is gone, if its going to stay gone you can just pull the heater valve and put a blanking plate on it.

Couldn't find the reference on the blog but if you mean blanking the tap on the head I thought this too...but other day some guys on the MG BBS where talking about this and how it is NOT a good idea as you end up with a hot spot on the 4th piston.

https://www.omniautos.force9.co.uk/sprite/m_cool.htm

Has some ideas of how to reroute around. Just something to be aware of I guess.

62Migit
05-06-2013, 05:36 PM
Just looked at your blog... We've done a lot of the same work and even have similar blogs. Saw a post about your heater valve leaking. Looks like your heater is gone, if its going to stay gone you can just pull the heater valve and put a blanking plate on it.

No worries, I wanted to run the engine before the car was complete (call it a morale boost?) and I used a long length of heater hose to replace the heater plumbing. When I refurbish the heater it will go back in its proper place. Working heater = more convertible days!

Mark

dklawson
05-07-2013, 08:15 AM
If originality is not important in your re-wiring process you may want to also consider wiring kits from EZ-Wiring. They can offer some generic and customizable harnesses in GM color codes with functions printed on the wires to help you trace them. With the function printed on the wires, color codes are a bit less critical. Combine that with the split braided sleeving I mentioned earlier and you can have a new harness with a semi-original appearance and modern functionality for a fairly low investment. While I have not used their products, they appear to be quite common with people rebuilding classic American cars and Hot Rods.
https://www.ezwiring.com/wiring_harness.html

David_Doan
05-08-2013, 01:09 AM
Updated original post with Functional Diagram

smaceng
05-08-2013, 02:26 AM
You might take a look at bits4brits.com where I bought my BE fuse and relay box. He custom made it for me with the wiring for my application.
Scott in CA

JPSmit
05-08-2013, 08:06 AM
This is I hope not a hijack however, I will likely need a hot rod harness for the Vauxhall as I can't seem to source an original and mine are mostly wrecked. How do you determine how many circuits you need? I presume that you would want more than the original few. But, is there a way to calculate?

David_Doan
05-08-2013, 08:51 AM
This is I hope not a hijack however, I will likely need a hot rod harness for the Vauxhall as I can't seem to source an original and mine are mostly wrecked. How do you determine how many circuits you need? I presume that you would want more than the original few. But, is there a way to calculate?


"Calculate" is a strong word. I broke mine down by major function and draw. I ended up with 6 circuits as shown in the attached pic. I might split the flashers and parking lights to their own fuse. and if you have a radio it would get its own.

27150

BlueMax
05-08-2013, 09:45 AM
I wanted to retro my wiring since most everything will be retro for the Healey. Contacted Road Island Wiring for a quote to build the harness with the cloth binding.,I felt that the estimate was way out of line. At the time I was working up a large order with AH Spares noticing that they offered complete harness for the car. I asked if they used Autospark and they said yes, that Autospark was the largest wiring manufacture in the UK. I layed out what I wanted for the car, after a few dozen emails later we came up with a custom harness for the Frogeye. FYI , Road Island Wiring has their harness manufacture through Autospart UK.


27151

bug_sixty
05-08-2013, 01:13 PM
heh, would you mind sharing the added wires to your loom... Some of us might want to ditto to AH... thx

BlueMax
05-08-2013, 02:12 PM
Here is basically what I had Autospark do to the harness, instead of the cloth insulator for the individual wires I chose vinyl.





Electric speedometer
Electric cooling fan (Relay)
Thermo fan switch (Relay)
Electric tachometer
Drop external voltage regulator
Voltmeter
Alternator for single wire exciter
Provision for six fuses
Heater Blower (Relay)
Head light (Relay)
Provision for Odyssey PC625 light weight battery
Electric pump (Relay)


HTH

bug_sixty
05-13-2013, 12:09 PM
Accessory outlet(s)??

bug_sixty
05-13-2013, 12:19 PM
OH, I'm electrically deficient...What provisions were made for light weight battery in layman's terms?

BlueMax
05-13-2013, 12:26 PM
Accessory outlets, not quit sure what you mean? Terminals were incorporated for the small light weight battery post on harness.

bug_sixty
05-13-2013, 12:58 PM
ah, ie. cigar lighter(s)

bug_sixty
05-13-2013, 12:59 PM
without the lighter!

bugeyepaul
05-14-2013, 09:12 PM
I have pretty much the same plans. I'd like to gut the voltage regulator and use it as a box for either some of the relays or the added fuses. I'd like to keep it semi stock looking.

bug_sixty
05-15-2013, 02:52 AM
My thoughts exactly...