What Does TM and EB Mean on a 7-Way Trailer Plug
Updated 11/13/2025 | Published 10/23/2025
Question:
Need to know what eb and tm stands for on a female trailer adapter 7 blade means.
asked by: Timothy
0
Expert Reply:
Thanks for your question, Timothy.
Usually on a trailer plug the EB would stand for electric brakes and TM would stand for tail marker (or the running lights). Hopkins part # HM45MV and other similar plugs will have labels like this on them so indicate which pin is for what function.
expert reply by:
Gwendolyn Y
0
Hopkins HM45MV
(click to enlarge)
(click to enlarge)
Continue Researching
- Search Results: 12" brake drum
- Search Results: battery charger
- Search Results: drop hitch
- Shop: CURT 7-Way/4-Way Trailer Connector and Relay Kit
- Search Results: 7 way plug
- Search Results: viking wheel
- Search Results: trailer leaf springs
- Shop: Bright Way 12V Onboard Battery Charger for Hydraulic Dump Trailers AC to DC - 12V - 10 Ah
- Shop: Curt Replacement OEM USCAR Trailer Connector - Dual Connection - 7-Way RV Style and 4-Way Flat
- Q&A: What Does TM Light Refer to on Adapter 4 Pole to 7 Pole and 4 Pole # C57674
- Q&A: What is AX Auxiliary Pin on Hopkins 7-Way Trailer Connector
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Search Results: trailer tires and wheels
- Shop: Bright Way Solar Battery Charger - 7.5 Watt Solar Panel
- Shop: Trailer Wiring
- Video: Review of Bright Way Battery Charger - 12V Onboard Battery Charger Hydraulic Dump Trailers - BRW49FR
- Shop: etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector
- Shop: Trailer Hitch
- Shop: Hub Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Shop: Brake Controller
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Shop: Suspension Enhancement
- Shop: Base Plate for Tow Bar
- Shop: Vehicle Tow Bar Wiring
- Shop: Vehicle Tow Bar Brake System
Gwendolyn Y.
11/13/2025
Hey Timothy, did the info about the EB and TM labels help you sort out the wiring on your trailer adapter? Knowing what worked could help others trying to read those markings too.