2770 Dunbier Adaptor 7 Flat to 7 Round Large | Marine Trailer Part
2770 Dunbier Adaptor 7 Flat to 7 Round Large | Marine Trailer Part
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✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide
🔧 Product Description
Dunbier 7-Pin Flat-to-Large-Round Trailer-Plug Adaptor – Part Number: 2770
A plug-and-socket adaptor that adapts a vehicle fitted with a 7-pin flat connector to a trailer using the Australian large 7-pin round format. It allows a correctly wired towing vehicle and trailer with different connector housings to be connected without permanently changing either loom.
⚙️ Key Features
- Seven-circuit trailer-light connection
- No-splice removable adaptor
- Moulded or assembled weather-resistant housing
- Suitable for temporary or permanent towing use
- Maintains standard lighting and auxiliary circuits when both ends are wired correctly
📏 Specifications
- Circuit count: 7
- Connector formats: As stated in the product name
- Pin functions must be checked against the towing vehicle and trailer
🔄 Cross Reference & Related Parts
- Dunbier: 2770
- Large round vehicle socket: Dunbier 2820 or 2835
- Large round trailer plugs: Dunbier 2830, 2831D and 2834
- 7-pin flat plug/socket: Dunbier 2851 and 2852
🚤 Trailer Compatibility & Application
- Suitable for Australian trailer connector systems using the matching pin layouts
- An adaptor changes the physical format but does not correct non-standard wiring
- Auxiliary circuits may differ between vehicles and trailers
🔌 Function
Transfers trailer lighting and auxiliary electrical circuits between two different seven-pin connector formats.
⚠️ Common Signs of Failure
- Lighting functions are crossed or missing
- Pins are corroded or pushed back
- Adaptor becomes loose in either socket
- Housing is cracked
- Connection heats because of poor contact
🛠️ Installation & Safety
- Compare the pin-function diagrams before use
- Do not force mismatched plugs
- Clean and lightly protect contacts with dielectric grease
- Secure the lead so it cannot drag
- Test every trailer function before towing
📦 Condition
- Genuine Dunbier Marine Products part
- Brand new
- Supplied as one seven-pin trailer-plug adaptor
- Supplied in original or equivalent packaging
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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