"Solar Prep" wiring on 2021 17MKE

[DrLove]

I am installing a solar panel on my 2021 17MKE but the "solar prep" wiring for the charge controller (see picture) has no markings as to which goes to the roof panel and which goes to the batteries.

Does anyone have insight into how to figure this out? Also, is there a fuse on the positive running out to the batteries? It seems so and it also seems that the wiring out to the battery just integrates into the main wiring that attaches to the battery itself. Is that correct?

I've read the other posts on here but 2021 was a transition year between the 2020 "solar prep" only having wiring to the roof and a complete solar setup on the 2022 models.

Any clarity would be appreciated.

[FT4NOW]

Welcome to the forum.

You could use a meter and check for continuity.

[Najataagihe]

Easy enough to find out.

Disconnect your battery, completely - both cables.

Tie them together.

Use an ohmeter on the solar circuits to find out which one is open and which one is closed.


Closed to battery, open to solar panel.



Welcome to the forum!

[Soundsailor]

I am installing a solar panel on my 2021 17MKE but the "solar prep" wiring for the charge controller (see picture) has no markings as to which goes to the roof panel and which goes to the batteries.

Does anyone have insight into how to figure this out? Also, is there a fuse on the positive running out to the batteries? It seems so and it also seems that the wiring out to the battery just integrates into the main wiring that attaches to the battery itself. Is that correct?

I've read the other posts on here but 2021 was a transition year between the 2020 "solar prep" only having wiring to the roof and a complete solar setup on the 2022 models.

Any clarity would be appreciated.

Looks like you're new, welcome aboard. As others have suggested a meter is your friend. You could reach out to GD Customer Support (be sure to include your VIN number), they may be able to help you identify which is which.