autmotive Standalone ECU and PDU custom flying lead harnesses

Don't Settle for Generic

With YourSpec’s advanced Wiring Project Manager and wire/pin offerings, you can easily create a fully custom flying lead harness for your standalone engine management system or power distribution unit installation. 

Custom standalone engine management system and power distribution unit flying lead harnesses Haltech Elite 750
Custom standalone engine management system and power distribution unit flying lead harnesses template project

Get Started Fast

Get a quick start on customizing your flying lead harness by using one of our template projects or looking at other user’s public projects. 

To find a project to base yours off of, visit our Wiring Project Manager Public Search page. Once you have found a good starting point, you can create an account and copy the project into your account to begin making edits.

Wide Support

YourSpec carries the pins needed to build custom flying lead harnesses for the following standalone engine management systems and power distribution units.
* denotes a template project being available

  • Haltech
    • Haltech Elite 550*
    • Haltech Elite 750*
    • Haltech Elite 1500*
    • Haltech Elite 2500*
    • Haltech Nexus R3*
    • Haltech Nexus R5*
  • ECUMaster
    • ECUMaster EMU Black*
    • ECUMaster EMU Pro 8
    • ECUMaster EMU Pro 16*
    • ECUMaster PMU 16
    • ECUMaster PMU 24
  • Megasquirt
    • Megasquirt MS3 Pro
    • Megasquirt MS3 Pro Mini
    • Microsquirt
  • MoTeC
    •  MoTeC M130
    •  MoTeC M150
    •  MoTeC M170
    •  MoTeC M190
    •  MoTeC M122
    •  MoTeC M141
    •  MoTeC M142
    • MoTeC M181
    • MoTeC M182
    • MoTeC PDM15
    • MoTeC PDM30
    • MoTeC PDM32
Custom Flying Harnesses
Custom Flying Lead Harness

What YourSpec Offers

Quality materials

We only stock high quality wire, pins, and connectors. We understand every project has different needs, so we make sure to stock wire with multiple options of strength, weight, and durability so your project gets exactly what it needs.

Cut to length

Order individual wires accurately cut to length for your project, but pay like you bought in bulk. We have redundant systems in place to make sure your wire is cut to your exact specification.

Wire marking

Our wire marking system incorporates a state of the art UV laser that reacts photochemically with the titanium dioxide (TiO2) in the wire insulation. This results in a highly durable and readable marking.

end stripping

Stripping with YourSpec guarantees precise cuts every time. We use high end rotary stripping tools that can accurately measure and strip your wire to exact measurements. Our tools have an integrated sensor to detect blade contact with the conductor.


Save time in assembly time by allowing YourSpec to do the crimping for you. We have a variety of tools and die-sets specific for each pin we offer.


Want to add a bit of robustness to the end of your wire or are using screw down terminal blocks? Specify tinning on your wire ends for the prefect solder coverage.

full control

Our Wiring Project Manager allows all processing options to be fully configurable to ensure our services can be used in all varieties of projects.

something else?

Wanting to work with YourSpec but we don't offer what you need to complete your project? Reach out, we are always happy to discuss custom projects, processing options, or assembly.

Ready to get started with YourSpec?

These links will set you on the path for success