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race car wiring help #2873048
01/12/21 09:12 AM
01/12/21 09:12 AM
Joined: Jun 2005
Posts: 377
Michigan
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BigFish69 Offline OP
enthusiast
BigFish69  Offline OP
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Joined: Jun 2005
Posts: 377
Michigan
Does anybody have a simple wiring drawing they used to wire up there race car don't need any accessories just how you wired the ign. starter, coil, msd the wiring that used to make it start and run. Im starting from scratch its a Dakota race only truck the only thing im using is the original ign. key switch from the truck.
thanks

Re: race car wiring help [Re: BigFish69] #2873130
01/12/21 11:46 AM
01/12/21 11:46 AM
Joined: Feb 2003
Posts: 2,482
S.E. Michigan
cl440 Offline
top fuel
cl440  Offline
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S.E. Michigan
I used the ARC kit and I have to say it was very easy and an extremely clean installation. All the circuits are fused with relays. Its a complete kit, affordable and easy to install.

Re: race car wiring help [Re: BigFish69] #2873135
01/12/21 11:55 AM
01/12/21 11:55 AM
Joined: Mar 2006
Posts: 8,359
MI, usa
dvw Offline
master
dvw  Offline
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MI, usa
Mount relays close to their intended device. Fuel pump, fan, water pump, msd etc. Mount your switch panel, (and fuse block) if it's not integrated. I like using the insulated power studs from Speedway as a central power source on the fire wall from the battery. A second stud on a mounting plate for the MSD and junction block works well. Each relay get a ground and 12 volt battery feed. Use the battery at the rear for the fuel pump relalay. The alternator output stud for the fan and water pump relays. The firewall power stud can feed the insulated stud on the MSD mounting plate.. Then each relay feeds from its control switch. The switches can be battery powered (fans, waterpump) or ignition switch powered ( msd, fuel pump etc. I'll take a few pics of my diagrams for you later today. Once all the components are mounted. It's just a matter of bringing the wire back from the component to the MSD/dash mounting plate terminal block. Then from the plate to the switch panel. You can see the insulted stud at the right upper corner of the pic along with the terminal strip. More pics to come.
Doug

1128112147.jpg
Last edited by dvw; 01/12/21 11:57 AM.
Re: race car wiring help [Re: BigFish69] #2873143
01/12/21 12:21 PM
01/12/21 12:21 PM
Joined: Jan 2003
Posts: 28,102
Oregon
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AndyF Offline
Too Many Posts
AndyF  Offline
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Posts: 28,102
Oregon
I'd recommend starting with a kit from ARC. They make a bunch of race car kits so just spend some time on their website. You'll help yourself a bunch if you sit down and list all the electronics that you'll be running in the car. The problem that most people have is they start off with just the obvious stuff then then start to add things like a line lock, two step, trans brake, etc. As they add stuff the wiring becomes a rat's nest.

Re: race car wiring help [Re: AndyF] #2873221
01/12/21 01:55 PM
01/12/21 01:55 PM
Joined: Sep 2003
Posts: 13,936
north of coder
moparx Offline
"Butt Crack Bob"
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Posts: 13,936
north of coder
when doing any wiring, neat routing not only looks good, it also makes troubleshooting easier as well.
beer

Re: race car wiring help [Re: moparx] #2873231
01/12/21 02:13 PM
01/12/21 02:13 PM
Joined: Aug 2003
Posts: 3,942
On the bumper
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n20mstr Offline
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On the bumper
ARC is what i have, it makes it really easy to do it neatly . Works really well


....BAD A$$ STREET CAR.....
Re: race car wiring help [Re: n20mstr] #2873318
01/12/21 05:01 PM
01/12/21 05:01 PM
Joined: Feb 2003
Posts: 2,482
S.E. Michigan
cl440 Offline
top fuel
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Posts: 2,482
S.E. Michigan
I mapped mine out first. Made the installation go much smoother . Also I have the map for troubleshooting if there is an issue.

Relay Panel Labeled.JPG
Re: race car wiring help [Re: BigFish69] #2873368
01/12/21 06:30 PM
01/12/21 06:30 PM
Joined: Nov 2015
Posts: 501
Missouri
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jwb123 Offline
mopar
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Missouri
MSD has wiring diagrams for all their units on the website, they even offer a book for those who don't like computers. I have never been happy with the kit approach to wiring, I simply mount all my boxes and modules, get a piece of paper and draw out the wiring connections needed. Do a little figuring on what gauge size wire to use and then start building a harness. My main problems are usually the lack of enough different wire colors so I don't have to use same color on different circuits. To get a good clean harness, no substitute for making your own from scratch, just takes a little planning. Lay the wires in place and just put one piece of tape here and there to keep the harness formed. Solder and heat shrink all connections, and don't completely tape the harness until it all works like you want.

Re: race car wiring help [Re: BigFish69] #2873538
01/13/21 07:12 AM
01/13/21 07:12 AM
Joined: Jan 2003
Posts: 1,794
MD
RTSE4ME Offline
top fuel
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MD
I used the K&R kit. Easy to install just a little tedious to make it look nice. All the wires are labeled which is nice Also used Deutsch connectors for most devices.
I also heard good things about Leash Electrons relay boards https://leashelectronics.com/t/race-electronics-2
Electrical Depot is a good source for electrical supplies https://theelectricaldepot.com/

Re: race car wiring help [Re: RTSE4ME] #2873596
01/13/21 09:32 AM
01/13/21 09:32 AM
Joined: Jun 2005
Posts: 377
Michigan
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BigFish69 Offline OP
enthusiast
BigFish69  Offline OP
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Joined: Jun 2005
Posts: 377
Michigan
Thanks for all the good advice im Diy guy so I will lay it out as suggested and wire it from scratch.

Re: race car wiring help [Re: BigFish69] #2873634
01/13/21 10:09 AM
01/13/21 10:09 AM
Joined: Jan 2003
Posts: 17,791
Las Vegas
Al_Alguire Offline
I Live Here
Al_Alguire  Offline
I Live Here

Joined: Jan 2003
Posts: 17,791
Las Vegas
I used to do them all myself as well. I have since gone to buying kits to wire them up, makes for a nice tidy package and speeds things up. I have used K&R, ARC, Painless, Smartwire and Speedwire. I now prefer Speedwire stuff, but its not for the faint of wallet for sure. I like having a main board where everything land with LED's to tell me if there is an issue. Also prefer the serial cables to the switch panel provided.

Re: race car wiring help [Re: n20mstr] #2873818
01/13/21 01:54 PM
01/13/21 01:54 PM
Joined: Dec 2012
Posts: 1,615
Wind Gap,Pa.
S
Sammy Offline
top fuel
Sammy  Offline
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Joined: Dec 2012
Posts: 1,615
Wind Gap,Pa.
Originally Posted by n20mstr
ARC is what i have, it makes it really easy to do it neatly . Works really well



I was leaning to one of these and eliminate the stock key start.
Not sure how to bypass and use the ARC panel start switch.

Re: race car wiring help [Re: Al_Alguire] #2874061
01/13/21 10:49 PM
01/13/21 10:49 PM
Joined: Apr 2003
Posts: 12,427
aZLiViN
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J_BODY Offline
I Live Here
J_BODY  Offline
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aZLiViN
Gutted the mid 90s painless wiring out of the Duster and have a Digital Delay switch panel and board.... now hopefully it’ll just install itself smile
https://www.racedigitaldelay.com/switch-megapanel.php

Re: race car wiring help [Re: Sammy] #2874127
01/14/21 06:23 AM
01/14/21 06:23 AM
Joined: Jan 2003
Posts: 6,988
Tulsa OK
Bad340fish Online content
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Bad340fish  Online Content
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Posts: 6,988
Tulsa OK
Originally Posted by Sammy
[quote=n20mstr] ARC is what i have, it makes it really easy to do it neatly . Works really well



I will second the that the Leash stuff is really good, I have several of his products all top notch.


68 Barracuda Formula S 340
Re: race car wiring help [Re: Sammy] #2874144
01/14/21 07:34 AM
01/14/21 07:34 AM
Joined: Aug 2003
Posts: 3,942
On the bumper
N
n20mstr Offline
master
n20mstr  Offline
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N

Joined: Aug 2003
Posts: 3,942
On the bumper
Originally Posted by Sammy
Originally Posted by n20mstr
ARC is what i have, it makes it really easy to do it neatly . Works really well



I was leaning to one of these and eliminate the stock key start.
Not sure how to bypass and use the ARC panel start switch.


i still use the stock starter relay. Just use the ARC panel to provide 12v to the relay on the small stud.


....BAD A$$ STREET CAR.....
Re: race car wiring help [Re: n20mstr] #2874146
01/14/21 07:37 AM
01/14/21 07:37 AM
Joined: Aug 2003
Posts: 3,942
On the bumper
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n20mstr Offline
master
n20mstr  Offline
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On the bumper
there is some really good info on YouTube about automotive wiring ..... there is also some "bad" info, Have to be careful , but there is some good for sure.


....BAD A$$ STREET CAR.....
Re: race car wiring help [Re: n20mstr] #2874204
01/14/21 11:14 AM
01/14/21 11:14 AM
Joined: Feb 2003
Posts: 2,482
S.E. Michigan
cl440 Offline
top fuel
cl440  Offline
top fuel

Joined: Feb 2003
Posts: 2,482
S.E. Michigan
Originally Posted by n20mstr
Originally Posted by Sammy
Originally Posted by n20mstr
ARC is what i have, it makes it really easy to do it neatly . Works really well



I was leaning to one of these and eliminate the stock key start.
Not sure how to bypass and use the ARC panel start switch.


i still use the stock starter relay. Just use the ARC panel to provide 12v to the relay on the small stud.


This is what we did also

Re: race car wiring help [Re: cl440] #2874210
01/14/21 11:33 AM
01/14/21 11:33 AM
Joined: Jan 2003
Posts: 6,988
Tulsa OK
Bad340fish Online content
master
Bad340fish  Online Content
master

Joined: Jan 2003
Posts: 6,988
Tulsa OK
I wanted my starter relay in the trunk, and because the stock style relay had been less than reliable for me I changed to a ford style. I got a relay from a Jeep CJ5 with an automatic transmission. It is the Ford Style relay but requires a ground for the neutral safety switch like stock. It has worked good and I like having that cable only powered when I push the starter button.


68 Barracuda Formula S 340
Re: race car wiring help [Re: dvw] #2874520
01/14/21 09:31 PM
01/14/21 09:31 PM
Joined: Mar 2006
Posts: 8,359
MI, usa
dvw Offline
master
dvw  Offline
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Posts: 8,359
MI, usa
My wiring diagrams.
Doug

502CFBE2-CD79-4713-8D5F-B06659C9B61F.jpegB5E276E5-19D8-4993-8DAB-8CA2C0571406.jpeg7353FC2F-986E-48F5-B2A5-B01EA0F69DA2.jpegA4941910-0525-47DF-BE4A-05766E9F252A.jpeg
Re: race car wiring help [Re: dvw] #2874687
01/15/21 11:36 AM
01/15/21 11:36 AM
Joined: Dec 2005
Posts: 5,476
Fulton County, PA
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CMcAllister Offline
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Fulton County, PA
The all in one boards, ribbon cables, kits, printed circuit panels, etc. are nice until something in them fails. How many people carry spares?

I still like to source my components, build my own system for the requirements of the car in question. And be able to carry spare parts and easily identify and fix any issue at the track.

I have specific ways of organizing and putting a system together. No kit really fits what I like to do. So why buy it and only use half of it?

Last edited by CMcAllister; 01/15/21 11:39 AM.

If the results don't match the theory, change the theory.
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