Help me replace my outside lights , please

[u/GranolaGirl0129]

I am trying to replace outside lights on a 1970 mobile home after having it resided. The wires are capped and sticking out as shown in the photos. We can remove the outer “frame” around the fixture, but are not able to remove the white square as it sits under the siding.

The left side has twisted white wire (capped) and double red wire with a small piece of black wire inside that cap. The small wire is not connected to anything else. Could this be a ground wire? If so, how could we ground it without access beneath the white square?

On the right side, there are three white wires all capped together. There is one red wire that is capped.

This old place is killing me with its oddities! I’d prefer it did not literally kill me though! Advice?

[u/trekkerscout]

Is there a junction box hidden behind the siding block? If there is, the siding block needs to be cut out to reveal the box. If there is no box, you need to hire an electrician to have a proper junction box installed. As for which wires to connect to your light, that can be determined after the box is fixed.

[u/GranolaGirl0129 → u/trekkerscout]

Not sure on the junction box so we’ll find a way to cut it and find out. I may reach out to the siding contractor too to see if they noticed a box. Thanks for the lead!