Trailer Wiring 4 Pin Connector

[disallowedword]

Anyone have issues tapping into the rear tail lights for a 4 pin style connector?

 

[alain99]

What adapter are you using?
Might I suggest using a T connector like this one TEKONSHA | 118875 | T-One® T-Connector Custom Harness, 4-Way Flat, w/Circuit Protected ModuLite® HD Module, Compatible with Tesla Y, no splicing required.

 

[disallowedword]

No because the wiring changes depending on which year model Y you have and it looks like that product doesnt fit a 2024. I am talking about wiring something like the following directly into the factory harness of the tail lights / turn signals. This can be bought for less than $10 bucks vs $100s with the link you provided:

 

[disallowedword]

My appologies I posted a pic of the male side of the harness, it would actually be the female side that would be on the tesla:

 

[disallowedword]

It's also worth menitoning the product link you provided is very scarce or non existent. I can't find a seller that sells it as of the date of this post.

 

[android04]

It's also worth menitoning the product link you provided is very scarce or non existent. I can't find a seller that sells it as of the date of this post.

What you are trying to do will work because I've done it and it worked on my 2018 Model 3. But the taillight word are very thin and hard to work with without damaging them. The Y connector is the best solution, or otherwise I would recommend getting the Tekonsha Zero Contact Universal one that I've also used on Model 3 TEKONSHA | 119250 | ZCI™ Zero Contact Interface Universal ModuLite®

 

[disallowedword]

Thanks for the info. The zero contact interface is terrible. If u want to do the job twice like I am buy that product and then come back to this forum and do what I end up doing. The reviews are terrible on the product anyways, I should have avoided it.

 

[disallowedword]

Do we know what the connectors are called so we can build our own kit with the <$10 cable? Doubt theyre more than a few bucks each.

 

[alain99]

No because the wiring changes depending on which year model Y you have and it looks like that product doesnt fit a 2024. I am talking about wiring something like the following directly into the factory harness of the tail lights / turn signals. This can be bought for less than $10 bucks vs $100s with the link you provided: View attachment 1059545

You did not mention the car was a 2024!
Hey I am a penny pincher also but this is one area I try to not skimp too much, too many things could go wrong, I would not connect directly to the wires in the car without a interface that isolates the trailer lighting from the car electrical system.

Then try the ZCI from Techonsha, YES they are expensive but it is much cheaper that taking the risk of melting the OEM wiring harness of your car.
Or having the car complain about over voltage or what ever it will be detecting as a fault in the wiring harness.

 

[disallowedword]

You did not mention the car was a 2024!
Hey I am a penny pincher also but this is one area I try to not skimp too much, too many things could go wrong, I would not connect directly to the wires in the car without a interface that isolates the trailer lighting from the car electrical system.

Then try the ZCI from Techonsha, YES they are expensive but it is much cheaper that taking the risk of melting the OEM wiring harness of your car.
Or having the car complain about over voltage or what ever it will be detecting as a fault in the wiring harness.

Have u personally tapped into the tail lights directly? Looking for someone who has. I won't be using the ZCI