Selecting 'Motorsport' Style Wiring Connectors | Aka 'Mil-Spec' or 'Race-Spec'
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- Опубліковано 31 тра 2024
- Autosport connectors are the go to option when it comes to professional motorsport wiring harness construction, however many enthusiasts find it daunting understanding how to select a suitable connector. In this HPA members webinar, we’ll learn how to specify a connector and how to understand the part numbers.
While we prefer the terms 'motorsport', 'Autosport' (as per some branding) or 'race spec' connectors, these are also what many commonly refer to as 'mil-spec' connectors as well. Variations of this circular connector style are also widely used in aerospace applications, with the general difference for what we use here being our want for higher pin counts/density and more compact sizes than some of the more mainstream aero space use cases.
As covered later in this lesson it is also essential to match the right connector with the right crimp tools, with the likes of the Daniels Manufacturing Corp AFM8 or DMC AFM8 and similar crimp tools being considered industry standards at this level. While the initial cost is higher for a cimp tool like this, the fact that you can get different dies for the one tool does make them different to the more single use case specific tooling we would use with the likes of your Deutsch DTM or TE Connectivity AMP Econoseal and Weatherpack connectors.
This HPA members-only lesson titled '313 | Selecting Autosport Connectors' has been available on our website for 12 months or so, along with over 300 other lessons on a HUGE range of wiring, tuning, engine building, CAD and data analysis-based topics. 3 months Gold Membership is included for FREE with every course purchase.
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TIME STAMPS:
0:00 - Introduction
1:45 - Many different types within the Autosport range
3:00 - Focusing on the standard Autosport connectors today
3:30 - Choosing your wire gauge
5:08 - Doubling/tripling up contacts
7:45 - Working out how many positions are required
8:29 - Common wire gauge
12:34 - Understanding Autosport part numbers
24:55 - FJ40 project example
31:22 - Required tooling
34:41 - Booting options
39:54 - Questions
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TAGS:
#highperformanceacademy #learndriveoptimise #motorsport #wiring101#auto #carmods #automotive #motorsports #racing #boost #wiring #autosport #autowiring - Авто та транспорт
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Electrical Engineer here. When deciding which side of the connection a receptacle or plug is used, you ALWAYS use a receptacle on the side that is directly connected to a power source and the plug on the side that is connected to your loads or sensors. In the auto sport world, our PDM or relay box is going to be the source of our power so if you put a male connector on that end, you’ll have exposed contacts that are not finger safe. The loads or sensors typically aren’t producing their own source of power so it’s safe to touch their leads when disconnected from the power source.
Great advice! I learned the hard way with 220v
Not something I’ve consciously thought about but yea makes perfect sense
Would have thought the power side would be female as would be flat and no chance of bent pins causing shorts ? Same as car ECUs the ECU has male pins the power feeds have female ends ? Someone not paying attention in class lololol joke
I did comment some years back when u guys put the first wiring tutorial out not realising everyone is on a different levels you guys have helped me so much in different areas really appreciate all the work you guys have done and hope your entire team success 🎉
I was looking at using cannon plugs on a custom harness for a customers MGB, and after doing some price breakdowns, we figured out we can use Deutsch connectors for a third the price. Love Mil-Spec connectors though.
Where can I get that bulkhead connector spreadsheet?
This is so helpful for the ecumaster adu7!
Do you have any suggestions on running, for example, multiple grounds through multiple pins of a connector, or running one ground through the connector and then splicing multipe? Splice all near the connector, or near each branch? Obviously, whatever you do would need to be compatible with the current carrying capacity and current demand of the particular situation.
There's a few good ways to go about it, and it depends on the situation. One ground per device will be easier to diagnose if there is an issue, but takes up connector positions which are limited. Consider a dedicated grounds connector or two parallel connectors. If you have different sized positions, you can crimp multiple wires into one larger pin. Practice a few crimps before you do this, and twist the wires to one large wire before you insert it into the pin. Some pins and ferrules are designed for this. Run a single larger gauge wire on the other side of the connector. Be careful, some sensors will require a ground or 0v reference on the ECU and thus require individual wires.
My preference is to find a factory chassis ground, crimp all my ground wires into a few ring terminals, and bolt them all together with the OE fastener. Saves wire length and pin locations in your connectors. I don't like splicing, but if you want to splice, locate the splice where it will be easiest to access when installed.
If you have never done anything like this before, start with something simple like a light bar or dash camera and work your way into it. It's better to sacrifice wire and pins on practice crimps than to damage an expensive sensor!
Needed this
In all fairness guys, by time you've learnt what you need, bought a selection of rolls of wire, a No. of various sized pins, back shells, boots and then crimping tools, then the covering and tree boots.
We might as well stay at work, earn some overtime and pay someone to make a loom for us.
Andrea is enthusiastic 😉😂
I do chassis and engine work, the guys who do the wiring are extra special
First