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A roof-mounted Starlink Mini on a van needs a way for its cable to get inside. Draping it through a door seal works for a weekend, but the cable gets crushed, the seal leaks and drafts creep in. For a van you live in or use often, a proper cable entry gland is the tidy answer: a sealed fitting on the roof that lets the cable pass through without letting water follow it. This guide covers the types of gland, how to size one for the Mini's plug, where to put it and how to seal it so it stays dry for years.
Types of cable entry
| Type | How it works | Best for |
|---|---|---|
| Roof cable entry housing | A domed cover with a rubber grommet, screwed and sealed to the roof | Camper vans with solar or antenna cables |
| Split gland | Clamps around the cable; plug does not need to pass through | Pre-terminated cables like the Mini's |
| Compression cable gland | Threaded body with a nut that squeezes a seal around the cable | Panels and boxes; tight seal on round cable |
| Multi-cable entry | Several grommets in one housing | Solar plus Starlink plus other cables |
Sizing for the Mini's plug
The Mini's power cable ends in a DC barrel connector with a weather-sealing collar, which is larger than the cable. A standard compression gland sized for the cable will not let the plug through, and one big enough for the plug will not seal on the cable. You have three options:
- Use a split gland or split grommet that opens to accept the cable sideways.
- Pass the plug end through a larger hole in a housing, then seal around the cable with a split rubber insert.
- Use a connector at the roof: a short cable from the dish to a sealed roof socket, and a separate cable inside. Fewer people choose this, as it adds a joint.
Measure the plug's widest point with calipers before choosing. If you plan to route Ethernet too, size for both.
Choosing the location
- Pick a flat section of roof, clear of ribs, seams and the edges of roof panels.
- Keep it close to the dish so the outside cable run is short and tidy.
- Check what is underneath: ceiling panels, insulation, wiring, roof bows. Avoid cutting through a structural rib.
- Plan where the cable goes inside, ideally straight down into a cupboard or behind a panel.
- Leave room for the cable to make a drip loop outside before it enters.
Installing a roof entry
- Mark the hole position from inside and outside so you know you are clear of obstacles.
- Drill a pilot hole, then cut to size with a hole saw or step drill.
- Deburr the hole and treat the bare metal edge with primer or rust inhibitor.
- Fit a rubber grommet in the hole to protect the cable from the edge.
- Clean the roof around the hole with a suitable solvent.
- Bed the entry housing in a flexible sealant compatible with your roof finish.
- Screw or bond the housing as the maker specifies, and run a bead of sealant around the outside edge.
- Feed the cable through and close the seal around it.
Sealing that lasts
Use a sealant made for vehicles or RV roofs, rather than general-purpose silicone, which can fail to bond to paint and breaks down in UV. Choose one compatible with your roof: painted steel, aluminum and fiberglass each have recommended products. Recheck the seal after the first few months and after very hot or very cold spells, when expansion can open small gaps.
Cables for a roof entry
| Product | Key specs | Link |
|---|---|---|
| Starlink Mini USB-C to DC Power Cable, 10 ft, 18AWG (B0DDL4Y9WK) | USB-C male to DC barrel male, 10 ft / 3 m; 18AWG wire; PD trigger chip requests 20V; needs 100W (20V/5A) PD source; waterproof gasket on the barrel end | Check price on Amazon (opens in a new tab) |
| FlenKn 2-in-1 Starlink Mini Power + Ethernet Cable, 16.5 ft (TPWLXL01) | One 16.5 ft / 5 m run carrying DC power and Cat 6 RJ45 Ethernet; 10A rated; 1000 Mbps; IPX4 gaskets on both ports; includes DC to USB-C adapter with PD chip (20V, up to 100W; listing says the PD source must supply at least 20V/3.25A); also sold in 33 ft | Check price on Amazon (opens in a new tab) |
| CIRQUISTA 3-in-1 Starlink Mini Car Cable, boosted 20V, 9.8 ft | 12-48V input; integrated boost converter for stable 20V, 100W output to the Mini; USB-C PD 40W and USB-A port; LED voltage display; 18AWG; aluminum-alloy plug shell; 9.8 ft / 3 m | Check price on Amazon (opens in a new tab) |
Specs are from manufacturer and retailer listings and can change between versions; check the listing before you buy. We don't show prices because they change often; the button shows the current price on Amazon.
Starlink Mini USB-C to DC Power Cable, 10 ft, 18AWG (B0DDL4Y9WK)
USB-C male to DC barrel male, 10 ft / 3 m; 18AWG wire; PD trigger chip requests 20V; needs 100W (20V/5A) PD source; waterproof gasket on the barrel end
Pros
- States 18AWG wire gauge
- Waterproof gasket on the dish end
Cons
- Same 100W PD requirement as any trigger cable
- No voltage display
The waterproof gasket at the dish end protects the connection on the roof, and the 10-foot length covers most van roofs to a battery below.
FlenKn 2-in-1 Starlink Mini Power + Ethernet Cable, 16.5 ft (TPWLXL01)
One 16.5 ft / 5 m run carrying DC power and Cat 6 RJ45 Ethernet; 10A rated; 1000 Mbps; IPX4 gaskets on both ports; includes DC to USB-C adapter with PD chip (20V, up to 100W; listing says the PD source must supply at least 20V/3.25A); also sold in 33 ft
Pros
- Power and wired Ethernet in one cable
- Works with the original Mini power supply
- Includes a USB-C PD adapter
Cons
- IPX4 only, so keep the connectors out of standing water
- Listing's 65W minimum conflicts with Starlink's own 100W USB-C advice; plan for 100W
Power and Ethernet in one jacket means a single hole for both. Its IPX4 gaskets cope with splashes, but keep connectors out of pooling water on the roof.
CIRQUISTA 3-in-1 Starlink Mini Car Cable, boosted 20V, 9.8 ft
12-48V input; integrated boost converter for stable 20V, 100W output to the Mini; USB-C PD 40W and USB-A port; LED voltage display; 18AWG; aluminum-alloy plug shell; 9.8 ft / 3 m
Pros
- Boost converter keeps 20V when the 12V socket sags
- Works on 12V and 24V vehicles and power stations
Cons
- 18AWG, thinner than some rivals
- Plug-socket fit varies by vehicle
If the inside end goes to a 12V socket, a boosted cable helps on longer runs from roof to battery.
No-drill options
- Roof vent. Some fan and vent housings have room for a cable inside the frame.
- Window. A flat cable section under a sliding window, with a foam seal.
- Rear door. Route through the top corner of the door seal, but expect wear over time.
- Existing holes. Many vans have rubber plugs in body panels that can be replaced with a cable grommet.
Our campervan setup guide shows how the entry fits into a complete system, and our hardwire guide covers the power side.
FAQ
Do I need a gland for a Starlink Mini on a van?
For permanent installs, yes. For occasional use, a window or door route works.
Will the Mini's plug fit through a cable gland?
Not most standard glands. Use a split gland or a housing large enough for the plug.
What sealant should I use?
A flexible vehicle or RV roof sealant compatible with your roof material.
Where should I put the gland?
On a flat area near the dish, clear of seams, ribs and wiring.
Can I pass Ethernet through the same gland?
Yes, with a multi-entry housing or a combined cable.