r/Brightdrop

Anyone have access to GM's service-information portal. ([ACDelco TDS]?

I am looking for the color code for the wire attached to the **Pedestrian Sound Alert Module**, GM part **13562308** that goes to the front speaker. [BD 400 2025 9,990lb]

Thanks for any help.

Background: I have verified that unplugging the speaker in the front grill makes the sound of heavens gates opening stop, and no error messages are generated. While I value the extremely loud sound most of the time, there are times where a little bit more quiet would be appreciated, so I want to put the speaker on a switch accessible by the driver. It would be easier to cut the wire under the dash here and splice in a switch than to need to route wires through to the front bumper.

https://preview.redd.it/f54ri6yfeckh1.jpg?width=3000&format=pjpg&auto=webp&s=9b483cd01cf2fca5e7cf530e4ad5ef73fc6f4729

I'm wondering what the internal electrical options look like. I'm aware that there is a 400w 120v, but are there any 12v worth mentioning? What is the wattage or amperage for those?

Has anyone had any (relatively easy) methods for tapping into the main battery for more wattage?

Alternatively, has anyone dropped large batteries into the back to run 120v devices? I would hate to go AC (home) -> DC (battery) -> AC (plug) -> DC (external battery) -> AC (plugs), but I might not have a choice.

I'm going to try to run 2 freezers and a fridge.

Also please mention if you have the max battery, eAWD and if you have a 400 or a 600 body and maybe what year the vehicle is in case GM made suspension adjustments? I would imagine all of those details have some effect on crosswind susceptibility.

The reason I am asking is that for our 2024 eSprinter (big battery, long body, tall roof) it could not handle anything over a steady 20 mph gusting to 30 mph and you were getting rocked around in the lane on an interstate about 1 foot per each gust. It’s a wide van and it just was dangerous mixing it up with other traffic. I think the rear motor and rear bias to the battery pack made fundamental vehicle dynamics sketchy in those windy conditions like it was wanting to swap ends somewhat. In calm conditions up to 74 mph max speed it feel entirely safe and well controlled.