INEOS Grenadier DTP to Anderson SB50 Cable Guide
INEOS Grenadier DTP to Anderson SB50 Cable Guide
The DVA DTP-06-2S to Anderson SB50 cable converts the Grenadier's factory DTP roof port into an Anderson SB50 quick-disconnect outlet. It runs 14 AWG tinned copper and is designed for the Grenadier's 15A EXT roof circuits (EXT1–EXT3 share one 15A fuse; EXT4/ROOF is 25A). The most common use case: roof top tents (RTTs) already wired with Anderson SB50 connectors, letting you plug straight into the Grenadier's factory port with no custom wiring or connector crimping.
Quick Answer
- Grenadier DTP roof port → max 15A (EXT1–EXT3) or 25A (EXT4). The cable's 14 AWG conductor matches this.
- Anderson SB50 is rated 50A — the circuit, not the connector, is the limiting factor.
- Ideal for RTTs with factory SB50 ports: fridges, fans, roof lights up to ~180W.
- No crimping, no custom wiring — plug DTP end into Grenadier roof port, done.
Why the Anderson SB50?
Many roof top tents — from Eezi-Awn to Front Runner — ship with Anderson SB50 pigtails as their standard power interface. The SB50 is a genderless 50A connector widely used in overlanding because it's tool-free, weatherproof, and field-replaceable. The Grenadier's factory DTP ports don't speak "SB50" natively, so the DVA cable bridges that gap: DTP-06-2S male on the vehicle side, Anderson SB50 on the accessory side.
Forum member adam raised the right question when the cable was first announced on The INEOS Grenadier Forum (thread #12419122):
"14 AWG shouldn't be carrying 50A at any length, much less 3m. At 50A you're looking at 20% voltage drop and overheated conductors. The DTP connector is not rated for it, either — it's 25A… For the use cases they quote (fridges etc), 14 AWG should be sufficient. Agree that 50A is overstating it." — adam, INEOS Forum, Jul 2025
DVA's clarification in the same thread:
"3 of the roof ports share 1 15A circuit and 1 is 25A. This is specifically for Grenadiers with Roof Top Tents with Anderson ports (there are many) and gives easy access to the Grenadier's rooftop DTP port. The Anderson connector is rated for 50A — there is no 50A DTP port on the Grenadier. Hope that clears it up!" — DVA Mechanics, INEOS Forum, Jul 2025
Bottom line: the SB50 is used here for its connector standard, not its 50A capacity. The cable's 14 AWG conductor and the Grenadier's 15A circuit fusing set the actual limit — which is exactly right for RTT accessories drawing 5–15A.
Product Specifications
| Spec | Value |
|---|---|
| Vehicle-side connector | Deutsch DTP-06-2S Male (IP67 sealed) |
| Accessory-side connector | Anderson SB50 (genderless, 50A rated) |
| Wire gauge | 14 AWG tinned copper (per-conductor) |
| Length | 3 meters (~10 ft) |
| Grenadier circuit limit | 15A (EXT1–EXT3, 3-port shared) / 25A (EXT4) |
| Intended accessories | RTT lighting, portable fridges, fans, compressors ≤15A |
| Compatible vehicles | INEOS Grenadier (all variants with DTP roof ports) |
Grenadier DTP Circuit Reference
Understanding which roof port you're plugging into matters for sizing your accessory load:
| Port | Circuit | Max (fused) | Notes |
|---|---|---|---|
| EXT1 | Shared 15A | 15A total (all 3) | Ignition-switched |
| EXT2 | Shared 15A | 15A total (all 3) | Ignition-switched |
| EXT3 | Shared 15A | 15A total (all 3) | Ignition-switched |
| EXT4 / ROOF | Dedicated 25A | 25A | Always-live option via PWR button |
Source: INEOS Forum discussion #12419122, verified against Grenadier electrical architecture.
What You'll Need
- DVA DTP-06-2S to Anderson SB50 Cable (3m) — the adapter itself
- Dielectric grease (Permatex 22058 or equivalent)
- UV-resistant zip ties or cable clamps for routing
- Wire loom / convoluted tubing for exposed runs
- Panel mount bracket for Anderson SB50 (optional — if you want a fixed mount point on the roof rack)
No crimping tools needed. Both connectors arrive factory-terminated and tested.
Installation: Step-by-Step
Step 1 — Identify Your DTP Port
Locate the DTP roof port you'll use. If your RTT draws a steady load (fridge, fan), use EXT4/ROOF (25A dedicated circuit) where available. For lighter loads (lighting only), EXT1–EXT3 are fine, but remember all three share a single 15A fuse.
Step 2 — Plug in the DTP End
Push the Deutsch DTP-06-2S male connector into the Grenadier's DTP receptacle until you hear a firm click. The connector is IP67 rated and keyed — it only seats one way. Apply a small amount of dielectric grease to the connector sealing face before mating to prevent moisture ingress on extended trips.
Step 3 — Route the Cable
Run the 3-meter cable along the roof rack rail toward your RTT's SB50 socket. Use cable clamps or zip ties every 300–400mm to prevent chafing against rack edges. For runs over the A-pillar or down into the cab, cover the cable in split wire loom to protect against heat and UV.
Leave a small service loop (150–200mm coil) near the SB50 end — this absorbs vibration and gives you slack if you ever need to reposition the mount point.
Step 4 — Connect the Anderson SB50
Mate the SB50 connector to your RTT's existing SB50 socket. The SB50 is genderless — it connects in either orientation. Push together until the housings click flush; a half-engaged SB50 will arc and corrode quickly.
Step 5 — Test Before Closing Up
With the Grenadier ignition on (or PWR button active for always-live ROOF port), confirm your RTT accessory powers up. Check the DTP and SB50 connectors for warmth after 5 minutes under load — they should be ambient temperature at normal RTT loads. Any heat indicates a loose connection or an overloaded circuit.
Troubleshooting
No Power at SB50
- Check ignition state: EXT1–EXT3 are ignition-switched. If the vehicle is off, these ports are dead. EXT4/ROOF requires the PWR button to be enabled for always-live operation.
- Check DTP connector seating: A partially inserted DTP won't make full contact. Remove and re-seat with firm pressure until the click.
- Check fuse: The 15A (EXT1–EXT3) or 25A (EXT4) fuse in the auxiliary fuse panel. Location varies by variant — check the Grenadier owner's manual Appendix E.
Connector Running Warm
- Measure your accessory's actual draw with a clamp meter. If it's close to 15A, consider moving to EXT4/ROOF (25A circuit).
- Ensure the SB50 is fully mated — partial engagement increases contact resistance and generates heat.
- Add dielectric grease if running in wet or salty conditions.
SB50 Won't Fully Engage
- SB50 contacts may be slightly misaligned. Rock the connector side-to-side while pushing — both contacts need to align simultaneously.
- Check for debris in the socket; clean with electrical contact cleaner.
Related DVA Products & Guides
- DVA DTP-06-2S to Anderson SB50 Cable (3m) — the cable covered in this guide
- All DVA DTP Cables & Connectors — full range of Grenadier DTP adapters (Starlink, Weather Pack, IP65, splitters)
- Grenadier Power & Connectivity — DTP power cables, splitters, and accessory wiring solutions
- Grenadier DTP Connector & Accessory Wiring Architecture — complete reference for all DTP ports, circuits, and accessory integration
- How to Connect a Portable Fridge to Your Grenadier — DTP power methods for fridges including the SB50 path