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Simplifying campervan electrics. Design, build, and power your adventure.

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Alan Heffernan, Co-founder of Vunked
Co-founder

Alan Heffernan

Alan is co-founder of Vunked and leads electrical system design and real-world campervan builds. He holds an MSc in Mechanical Engineering from University of Glasgow and previously worked for four years as a Software Engineer at Sky in Livingston.

At Sky, Alan worked across both frontend and backend Java systems, helping design customer onboarding and support platforms used at scale across the UK.

Since co-founding Vunked in 2022, Alan has specialised in off-grid power system design and campervan electrical layouts. He has personally converted two vans in Glasgow, designing and installing their complete electrical systems — experience that underpins Vunked’s wiring diagrams, component recommendations, and installation guides.

Building campervans seemed like a good way to spend my days during lockdown. Three years later, it’s now a full time job. When not building your campervan electrical systems, you’ll find me in my van up a Munro somewhere or wild swimming in a remote Scottish loch.

Alan bridges mechanical engineering, software, and hands-on electrical work to ensure Vunked systems are both technically sound and DIY-friendly.

MSc Mechanical Engineering, University of Glasgow

Off-grid Power DesignCampervan Electrical SystemsSolar + Battery IntegrationPractical Van ConversionsInstallation Guidance
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My Rig — Mercedes Sprinter LWB

Big boy van ready for weeks off-grid in Europe hiking.

400Ah Battery400W Solar3000W Inverter
Aerial view of Mercedes Sprinter LWB with rooftop solar panels in the Scottish Highlands
Sprinter campervan interior showing kitchen with oak worktop and fixed bed
Sprinter campervan interior view from bed looking towards cab and kitchen
Alan Heffernan assembling campervan electrical components at a workbench

Articles by Alan

DC to DC Charger Wiring: The Complete Guide

DC to DC Charger Wiring: The Complete Guide

Our DC-to-DC wiring diagrams will help you install and maintain a reliable electric system for your campervan, including single and dual battery setups.

22 Nov 2024

Series or parallel battery connections

Should I wire campervan batteries in series or parallel? Batteries in series increase the voltage. Batteries in parallel increase the current

17 Jan 2023
Male & Female MC4 Connectors

How To: Install MC4 Solar Connectors

Why you need and how to use MC4 connectors with your solar panels

Get in Touch

Have questions about your campervan electrical setup? We're here to help.

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All Vunked system designs adhere to BS 7671 (IET Wiring Regulations) and relevant EU low-voltage directives.

12 Jan 2023
How To Charge A Leisure Battery

How to Choose a Campervan Leisure Battery

Our one stop guide will introduce you to everything you need to know about campervan leisure batteries

11 Jan 2023
MPPT Solar Charge Info

Solar Panels For Campervans: A Guide

Learn the fundamentals of powering your campervan using solar energy with our step by step guide

9 Jan 2023
Inverter Calculator

Campervan Inverter Size Calculator

What size of inverter do you need in your campervan?

15 Nov 2022
A Introduction to Campervan Electrics | Vunked

Introduction to Campervan Electrics

Everything you need to know to get started building a campervan electrical system

17 Oct 2022
How to wire an Inverter

How To: Wiring a Campervan Inverter

Learn how to wire a Victron campervan inverter in a few simple steps

1 Aug 2022
Understanding DC-DC Chargers

How to charge a leisure battery while driving?

There’s more than one way to charge a leisure battery while driving

14 Jul 2022
Do I have a smart alternator? | Perform a smart alternator test

What Is a Smart Alternator?

Smart alternators are common in modern vehicles and dictate which type of battery to battery charger you can use. Take our simple smart alternator test to ensure you choose the right battery charger for your campervan.

5 Jul 2022