Question:
If i buy replacement multi-plug 7- way and 4 pole trailer connector for a 2005 toyota tundra would i still need to buy a electronie turn signal converter to get the 2 wire lights to work on a boat trailer or should i buy a converter only if so what kind. thanks
asked by: Nelson H
Expert Reply:
The Multi-Plug, # 20137, is designed as a replacement if your 2005 Toyota Tundra came with a factory tow package that included the harness from the factory.
To add a 7-Way to a truck that did not have the factory tow package, you would first need to install a 4-Way, # 119176KIT. I have included a link to the isntallation details for you to view. This converter will take the separate turn and brake signals on the truck and make them a combined signal for use with the trailer.
After you install the 4-Way, you will then need to use # ETBC7 to to add a 7-Way trailer connector. The ETBC7 also includes all the wiring you will need to install a brake controller. I have included a couple of links that should help with the ETBC7 installation.
If you want to add a brake controller to use with trailers that have electric brakes, I recommend the Tekonsha P2, # 90885. It is one of our most popular controllers because it is easy to set up and easy to use. I have included installation details for it as well.
expert reply by: Michael H

Products Referenced in This Question
DISCONTINUED - Upgraded Circuit Protected Modulite with 4 Pole Harness and Hardwire Kit - Includes T
Product Summary:
Trailer Hitch Wiring
Powered Converter
Universal Fit
Product Specs:
4 Flat
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
Product Summary:
Proportional Controller
Electric
Electric over Hydraulic
Digital Display
Vehicle Mount
Product Specs:
Automatic Leveling
2 - 8 Brakes
360 Degrees
Universal Installation Kit forTrailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
Product Summary:
Brake Controller
Accessories
2 - 8 Brakes
10 Gauge Wire
Product Specs:
Connector
Brake Controller Wiring
Wired to Brake Controller
Product Page this Question was Asked From
Replacement Multi-Plug 7-Way and 4 Pole Trailer Connector
Product Summary:
Trailer Hitch Wiring
No Converter
Custom Fit
Product Specs:
7 Blade
4 Flat
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Will the Tow Ready Multi-Plug # 20137 Replace a Powered Converter on 2003 Lexus GX470
Trailer Wiring Harness for a 2003 Lexus GX470