Is There A Plug And Play Harness Available For My 2025 Toyota Crown Signia?

Updated 11/19/2025 | Published 07/31/2025

Question:

Is there a trailer wiring harness for a Crown Signia that doesn’t require splicing? Or at least a kit with specific installation instructions for the Signia? The harness would be kept inside the spare tire cavity.

asked by: James B

Expert Reply:

Hey James,

There is not a plug and play option for the 25' Crown Signia, a splice in option is the only available. We have the Curt harness # C59236 for your vehicle. The instructions are also universal since any splice in harness can be used on many different vehicles. I have still attached those instructions for you below to get a better idea of what the install will look like for you.

Are you looking to tow a trailer with that vehicle?

expert reply by: Nick S

Ovidiu

11/16/2025

I am looking for a solution to instal a led bar stop light. I hoped there is a plug and play elegant solution to avoid splicing the wires.... thank you. :(

Nick S.

11/19/2025

@Ovidiu I do not see that we have a plug and play option for a light bar, but we do have some that will require to be spliced like # 328-003-6017R. What kind of application are you looking to install this on?