How to Install Trailer Wiring 7-Way on Older Truck with Separate Turn Signals from Brake Lights
Question:
I have an older truck 1955 that has separate wiring for the brake lights and turn signals. The turn signals are controlled by an ad-on unit clamped to the steering column. The turn signals are different bulbs than the brake lights. How do I connect to a 7-pin connector and a newer trailer that uses the brake lights and turn signals in combo with the same bulb?
asked by: Martin S
Expert Reply:
You'll first need to install a 4-way on your truck that is designed to take separate turn signals and convert them to combined. For that you'd want the part # 119250KIT which will give you a 4-way that has combined circuits.
Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way.
If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller.
For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our bestselling brake controller because of how well it works and how easy it is to setup.
Products Referenced in This Question
ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Converter
- Universal Fit
- 4 Flat
- Tekonsha
more information >
Adapter 4-Pole to 7-Pole and 4-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LED Display
- Up to 360 Degrees
- Tekonsha
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
Hopkins Trailer Connector Adapter - 7-Way RV Style Blade Plug to 7-Pole Round Pin
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 0 - 5 Feet Long
- 7 Round - Blade
- Plug and Lead
- 7 Round - Round
- Hopkins
more information >
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