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Bobchambe

Titusville, FL

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Posted: 06/05/19 05:47pm Link  |  Quote  |  Print  |  Notify Moderator

I finally gave up my tow dolly and invested in a tow bar and base plate from Blue Ox for my 2019 GMC Acadia.

The base plate and tow bar work great, but I am having a problem getting lights to work.

Does anyone know which wires go to the stop, tail and directional lights? On the drivers side in the rear, under the little storage box, there are two wiring harnesses and a fuse box. I found two different brown or tan wires that were hot with tail lights on, but will not light up when I connect the tow vehicle through the relay. The same goes for the green wires for the right signal or yellow wires for the left signal. Not sure if there is a third wire I haven't found yet.

Can the 2019 Acadia be connected using the existing lights, or do I have to install separate sockets and run them totally from the tow vehicle?
Thanks in advance for any info available.

K Charles

Connecticut

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Posted: 06/05/19 06:20pm Link  |  Quote  |  Print  |  Notify Moderator

The Acadia has led tail lights. You can't just hook a wire to them to make them light.





Tyler0215

Iowa

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Posted: 06/05/19 07:10pm Link  |  Quote  |  Print  |  Notify Moderator

GM Wiring requires voodoo and magic. Find a pro

Bobchambe

Titusville, FL

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Posted: 06/06/19 04:09am Link  |  Quote  |  Print  |  Notify Moderator

K Charles wrote:

The Acadia has led tail lights. You can't just hook a wire to them to make them light.


Thank you Charles---that is why I bought the light kit from Blue Ox, with relays and instructions.

Big Katuna

Deland, FL

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Posted: 06/06/19 08:09am Link  |  Quote  |  Print  |  Notify Moderator

I’ve been towing since 2000, four different toads.

I have settled on magnetic lights that bypass the toads wiring completely.

With diodes and relays what happens is your on a trip and someone tells you you’re stop lights don’t work so good luck.

Mag lights never fail and if they do they are $10 at Harbor Freight.


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dodge guy

Bartlett IL

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Posted: 06/06/19 09:14am Link  |  Quote  |  Print  |  Notify Moderator

K Charles wrote:

The Acadia has led tail lights. You can't just hook a wire to them to make them light.


So does my 13 Explorer, but they are 12V and I run diodes.


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klutchdust

Orange, California

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Posted: 06/06/19 10:01am Link  |  Quote  |  Print  |  Notify Moderator

Big Katuna wrote:

I’ve been towing since 2000, four different toads.

I have settled on magnetic lights that bypass the toads wiring completely.

With diodes and relays what happens is your on a trip and someone tells you you’re stop lights don’t work so good luck.

Mag lights never fail and if they do they are $10 at Harbor Freight.


My plan on my 19 Rubicon is to run a separate wiring harness under and along the frame then have it plug into a custom made light bar that will slide into my hitch receiver. NO wires of the Jeep will be tampered with. I did this with my 08 Wrangler and it worked just fine.
With the electronics on this vehicle, no way will there be any wire splicing involved. I don't care what the splicing salesman say, nope, not going to happen.

Big Katuna

Deland, FL

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Posted: 06/06/19 11:46am Link  |  Quote  |  Print  |  Notify Moderator

klutchdust wrote:

Big Katuna wrote:

I’ve been towing since 2000, four different toads.

I have settled on magnetic lights that bypass the toads wiring completely.

With diodes and relays what happens is your on a trip and someone tells you you’re stop lights don’t work so good luck.

Mag lights never fail and if they do they are $10 at Harbor Freight.


My plan on my 19 Rubicon is to run a separate wiring harness under and along the frame then have it plug into a custom made light bar that will slide into my hitch receiver. NO wires of the Jeep will be tampered with. I did this with my 08 Wrangler and it worked just fine.
With the electronics on this vehicle, no way will there be any wire splicing involved. I don't care what the splicing salesman say, nope, not going to happen.


I did that with one toad. Still used the mag lights but ran a permanent harness then added plugs, shortened the wires on the mag lights.

K Charles

Connecticut

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Posted: 06/06/19 02:28pm Link  |  Quote  |  Print  |  Notify Moderator

Are you looking for the wires in the MH or the Acadia?

Bobchambe

Titusville, FL

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Posted: 06/06/19 03:00pm Link  |  Quote  |  Print  |  Notify Moderator

K Charles wrote:

Are you looking for the wires in the MH or the Acadia?
In the Acadia. The motor home wires are the same as when I pulled a dolly with mag lights.

I will probably get separate 1157 bulb sockets and bypass the Acadia wiring. You just remove the stop light, drill a hole, insert the new socket and connect the wires. The four wires are already run from the hitch to the rear of the Acadia.

Thanks, Bob

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