2004 Chevrolet Silverado Brake Controller | etrailer Aside from the brake controller wiring adapter, the trailer connector will be needed to complete the installation. If your vehicle has a round plug with a cap instead of a bundle of wires above the spare tire, use part # 30955 instead of the PK11898. You may also need a 4-Flat connector to complete your wiring.39510-3015-P · 5535-3015-P Trailer Brake Controller Installation - 2004 Chevrolet Today on our 2004 Chevy Silverado, we'll be installing the Tekonsha Prodigy P2 brake controller, in conjunction with the Tekonsha plug-in wiring adaptor for electric brake controllers for General Motors products, part number 90885-3015P. to begin with, we'll go ahead and locate and area where we want to mount the brake controller.
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