Etrailer e72PR Manual

The Etrailer e72PR is a premium 7-way RV blade to 6-way round trailer adapter with built-in power converter, designed for connecting modern RV electrical systems to standard 6-pin trailer connectors. Features include weather-resistant construction, integrated circuit protection, LED status indicators, reverse light support, and universal compatibility with most trailer lighting systems. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 7-way RV blade connector (male), 6-way round trailer connector (female), Power converter module, LED status indicators, Weatherproof housing, Mounting bracket.

Feature	Description
7-way RV blade connector	Standard RV plug with all functions (12V, ground, tail, brake, etc.)
6-way round trailer connector	Standard 6-pin trailer socket for lights and brakes
Built-in power converter	Converts RV power to trailer-compatible voltage
LED status indicators	Shows power, ground, and circuit activity
Weatherproof housing	IP67 rated for all-weather use
Reverse light support	Maintains reverse light function during adaptation
Circuit protection	Integrated fuse and surge protection
Mounting bracket	For secure vehicle mounting
Universal compatibility	Works with most 12V trailer systems
Heavy-duty wiring	12-gauge wires for reliable power transmission

Installation

Unpack and inspect contents. Ensure vehicle is parked and ignition is off.

1. Mount adapter: Use provided bracket to mount in accessible location near hitch.
2. Connect to RV: Plug 7-way connector into vehicle's RV outlet.
3. Connect to trailer: Plug trailer's 6-way connector into adapter socket.
4. Secure wiring: Use zip ties to route wires safely away from moving parts.
5. Test connections: Verify all plugs are fully seated and locked.

WARNING! Always disconnect from power source before installation. Ensure proper grounding to prevent electrical hazards.

First-Time Setup

After installation, perform initial configuration and testing.

1. Power check: Turn on vehicle ignition (do not start engine) and verify LED indicators illuminate.
2. Function test: Activate each trailer function (brakes, turn signals, running lights) and verify corresponding LED response.
3. Voltage verification: Use multimeter to confirm proper voltage at trailer connector (12V ± 1V).
4. Ground confirmation: Ensure solid ground connection between vehicle and trailer frames.

CAUTION! Never operate with damaged wiring or connectors. Replace immediately if any defects are found.

Specifications

• Input Connector: 7-way RV blade (standard SAE J560).
• Output Connector: 6-way round (standard 6-pin).
• Voltage: 12V DC input, 12V DC output (regulated).
• Current Rating: 30A maximum continuous, 40A surge.
• Wire Gauge: 12-gauge primary conductors.
• Protection: 30A blade fuse, reverse polarity protection.
• Weather Rating: IP67 (dust tight, waterproof to 1m).
• Operating Temperature: -40°F to 185°F (-40°C to 85°C).
• Dimensions: 4.5" x 3.2" x 1.8" (114mm x 81mm x 46mm).
• Weight: 1.2 lbs (0.54 kg).

Controls and Indicators

LED indicators provide visual status of all circuits. No physical controls required for normal operation.

LED Indicators: - POWER (Green): Illuminates when 12V power is present - GROUND (Green): Shows proper ground connection - LEFT TURN (Yellow): Flashes with left turn signal - RIGHT TURN (Yellow): Flashes with right turn signal - BRAKE (Red): Illuminates when brakes applied - RUNNING (White): Shows tail/running lights active - REVERSE (Blue): Indicates reverse light circuit active

Protection Features: Automatic overload shutdown, thermal protection, short circuit protection.

Connecting to Vehicles

Compatible with most RV and tow vehicle electrical systems.

1. Ensure vehicle ignition is OFF before connecting.
2. Align 7-way blade connector with vehicle socket (pin 1 at top).
3. Push firmly until click is heard (locking mechanism engaged).
4. Connect trailer 6-way plug to adapter socket (align keyway).
5. Rotate locking ring clockwise to secure connection.

Tip: Apply dielectric grease to connectors annually to prevent corrosion and ensure good contact.

Testing and Operation

Regular testing ensures proper operation and safety.

1. Pre-tow check: Verify all LED indicators function correctly before each use.
2. Function test: Have assistant verify all trailer lights work properly (brakes, turns, running, reverse).
3. Load test: With all trailer lights on, check for voltage drop (should be less than 0.5V).
4. Road test: Perform short test tow to verify stability of connections.
5. Disconnection: Always turn off vehicle lights before disconnecting adapter.

WARNING! Never tow with malfunctioning lights. Repair immediately before use on public roads.

Safety Features

Built-in protections: Overload protection, short circuit protection, reverse polarity protection, thermal shutdown, waterproof sealing.

Safety protocols: Always disconnect from power source before servicing. Use only approved replacement fuses (30A blade type).

Care & Maintenance

Monthly inspection recommended for heavy users, quarterly for occasional users.

1. Visual inspection: Check for cracks, corrosion, or damage to housing and connectors.
2. Connection check: Ensure all plugs seat properly and locking mechanisms function.
3. Clean connectors: Use electrical contact cleaner and soft brush to remove debris.
4. Apply protectant: Use dielectric grease on metal contacts to prevent corrosion.
5. Wire inspection: Check for fraying, cuts, or insulation damage.

CAUTION! Never use petroleum-based lubricants on electrical contacts. Use only dielectric grease specifically designed for electrical applications.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. SAE J560 compliant for connector standards. Meets DOT lighting requirements for trailer connections. Copyright © 2024 Etrailer; all rights reserved. For support, visit www.etrailer.com or contact 1-800-298-8924.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power LED	Blown fuse, poor connection	Check and replace 30A fuse; verify vehicle connector fully seated.
Some lights not working	Bulb failure, ground issue	Check trailer bulbs; verify ground connection at trailer frame.
LEDs dim or flickering	Voltage drop, corrosion	Clean all connections; check for damaged wiring; test vehicle alternator output.
Adapter gets hot	Overload, short circuit	Disconnect immediately; check for short in trailer wiring; reduce electrical load.
No reverse lights	Vehicle wiring, adapter fault	Verify vehicle reverse light circuit; check blue wire connection at adapter.
Intermittent operation	Loose connections, moisture	Check all connections; ensure seals are intact; dry connectors thoroughly.

Reset: Disconnect from vehicle for 30 seconds to reset protection circuits.

Service: 1-800-298-8924; www.etrailer.com