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2021 1500 camper/cap wiring issues?

Bpgood1
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Blue5.3l Enthusiast

Blue5.3l

Posted
Posted
15 hours ago, BigdaddyoCan said:

I just bought a 2021 1500 LT so this is very interesting to me too as I am going cap shopping.  I do not ahve advanced trailering so do I need to be concerned on wiring still? Kinda nervous as it a big leap from my 2006 to 2021 and I hear all these wiring issues that can pop up. The above seems to be for a 2019 but what should  I be asking to make sure they know what they are doing? Testing y trailer hookups before I get the cap this weekend so really want to make sure they wire it right once I get one.

The 2019 plus trucks are grouped together for wiring. Probably will change once again when the 2022 models come out. Leer makes a harness for the trucks that don’t have the advance trailing package. Otherwise you have to splice into your wires to make everything work on a truck with the advance trailing package. Leers parent company makes other caps so they all use the same harness. 

Bpgood1 Enthusiast

Bpgood1

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My Leer dealer was extremely wary of the plug and play harness. He said the old ones caught fire (can confirm this online) and the new ones worked spotty at best. He said they were very poor quality.

Blue5.3l Enthusiast

Blue5.3l

Posted
Posted
38 minutes ago, Bpgood1 said:

My Leer dealer was extremely wary of the plug and play harness. He said the old ones caught fire (can confirm this online) and the new ones worked spotty at best. He said they were very poor quality.

Had a Leer plug and play harness on my 2018 Sierra and never had a problem. Now overall quality of the caps that’s a whole different subject. 

Bpgood1 Enthusiast

Bpgood1

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4 minutes ago, Blue5.3l said:

Had a Leer plug and play harness on my 2018 Sierra and never had a problem. Now overall quality of the caps that’s a whole different subject. 

I hear all the horror stories, I'm on my 3rd Leer and I have been pleased with the quality of all of them

AlaskaErik Enthusiast

AlaskaErik

Posted
Posted
11 minutes ago, Blue5.3l said:

Had a Leer plug and play harness on my 2018 Sierra and never had a problem. Now overall quality of the caps that’s a whole different subject. 

I have the Leer plug and play harness in my 2016, but when the dealer wanted to splice into my 2019's wiring I said no.  This was in 2019, so I wasn't interested in being a guinea pig.  I got a tonneau cover instead.  No problems with the plug and play harness in my 2016 after almost five years.  I have the advanced trailering system in my 2019, but I did not know about the harness incompatibility issue with that.  My big concern at the time was my power down/up tailgate, which could only be operated with the canopy back glass in the open position.  Every canopy has a lip on the rear glass that prevents the tailgate from being opened, which is fine if you have a manually operated tailgate, but doesn't work with the power tailgates.  I imagine this will be resolved at some point in time in the future, but it wasn't in 2019.

  • 1 month later...
BigdaddyoCan Enthusiast

BigdaddyoCan

Posted
Posted
On 4/4/2021 at 10:13 PM, AlaskaErik said:

I have the Leer plug and play harness in my 2016, but when the dealer wanted to splice into my 2019's wiring I said no.  This was in 2019, so I wasn't interested in being a guinea pig.  I got a tonneau cover instead.  No problems with the plug and play harness in my 2016 after almost five years.  I have the advanced trailering system in my 2019, but I did not know about the harness incompatibility issue with that.  My big concern at the time was my power down/up tailgate, which could only be operated with the canopy back glass in the open position.  Every canopy has a lip on the rear glass that prevents the tailgate from being opened, which is fine if you have a manually operated tailgate, but doesn't work with the power tailgates.  I imagine this will be resolved at some point in time in the future, but it wasn't in 2019.

Would you not just have to open the window first? I know it makes using the console button useless but if you are opening it anyway not sure how big of an inconvenience that is. My cap is on order so will find this out shortly I am guessing :)

  • 9 months later...
Arlene Wolf New Member

Arlene Wolf

Posted
Posted

I am researching issues, including the plug and play harness issues for a 2022 Silverado Crew Cab, w/ the multi flex tailgate, 3.0 Duramax, with the advanced trailering package.  Leer states plug and play is now available and trouble free (trust but verify).  The Leer keyless entry was also ordered for my truck topper. 

 

I also want to make sure they are not poking holes in all my wires to figure out how to wire the topper. 

 

My last concern is the interior power for the interior lights and the triple cigarette lighter package.  The Leer dealer is insisting they run those wires ALLLLLLLLL the way to the battery.  I told the dealer for that power source he was out of his ever loving mind and that he would do no such thing!  I told the dealer that when he can prove that they have the correct plug and play 7 pin adaptor harness that they (Leer) state is now available, they need to grab the interior power from Pin #4 of the 7 pin adaptor.  Pin #4 is 12 Volt positive constant hot all the time to keep the trailer house battery charged when towing.  I thought running the power ALLLLLLLL the way from the front of the truck instead of from behind the rear bumper was the stupidest thing I had ever heard of.  

 

There is no freaking way I need an extra 30' of wire run to the front of my truck that can act as an antenna to pick up signals from the ECM and all the electronic wizardry in these newer vehicles and be re-transmitting it the length of the truck causing RF (radio frequency) issues and having all the voltage loss from going all the way to the battery.  Leer should have short training video's for their installers. 

 

They also need to teach their installers to double the gasket at the bulkhead ({top} front of the bed) where there is always a leak because the bulk head metal front is lower than the side plastic bed rail covers.  I will also verify with the local Chevrolet dealership the correct harness color codes for the wireless remote wires.  I know they source the connection from under the driver front sill plate.   

  • 3 years later...
cseaman Enthusiast

cseaman

Posted
Posted

any luck using a 4-pin extension and wiring direct? I have an Overland Vehicle Systems cap w/ only a third brake light to worry about

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