Michelle Cawley

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Insulation, Framing, Shore Power, and Pre-Wiring

Welcome to my van build series! In each video, I'll walk you through the projects we started each month (and, hopefully finished). I'll share details about the challenges we faced, what we learned, and how much everything cost.

I purchased a 2021 Ford Transit 350 extended high roof cargo van in August 2023. We spent 8.5 months converting it into my dream tiny home on wheels.

In this video, we complete three van build tasks:

1) Framing

2) 3M Thinsulate Insulation

3) Installing a shore power connection point

We started pre-wiring. (It took me so much longer to complete the pre-wiring than I expected.) I quickly learned that I am not an electrician. I understand how basic circuits work, but when you have DC and AC components in a tiny space, things get complicated (at least for me). Thankfully, my dad knew what he was doing!


What I learned from this process:

I am not an electrician.

Understanding how and where to run wires for lights, light switches, appliances, and equipment was the most mind-boggling exercise in the entire van build process. I could not wrap my head around how everything would eventually be connected. I watched tons of YouTube videos. I consulted my dad and my boyfriend (at the time). I drew schematics of where everything would be located. I still made mistakes. And that’s ok.

Choose the placement of your wall studs carefully.

I framed the walls using the standard building technique of 12"-16" on-center. But the ribs of the van weren’t always in alignment with these measurements and neither was my layout in some areas, which we’ll get to later in the build process.


How much did it cost?

$712 – Insulation (3M Thinsulate and Rockwool)

$700 – Prewiring (Marine grade wire, conduit, and zip ties)

$250 – Wood for framing, rivnuts, and bolts

$30 – Shore power connection point

$1,259 – Month One Subtotal

$2,951 RUNNING TOTAL

Let me know in the comments if you have any questions.

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