Parking lamp relay popping I believe

Appreciate all the help you have given me. Usually, electrical is my specialty but this has really stumped me. I can work around the issue fairly well. Took the car on a 8 hour road trip a couple of weeks ago and only had to turn on my heater twice the whole trip and that was just because I was at higher RPMs going at an incline, but for most of the trip I had A/C on biggest issue happens on hotter days or at idle. It likes to get a little hot for my liking but it’s pretty easy to avoid anything serious by using the heater and rolling the windows down. Just would prefer to not have to worry about it. Within the last few weeks, I have been slowing replacing just about everything on the vehicle to brand new as a lot of it was pretty worn calipers, tie rod, all new fluids and filters so besides the cooling issue the car is almost all new and great.

So not sure if you’d have a clue as to why this is for but was changing out some radiator hose clamps and found this connected dangling down looks like a light bulb connector, but nothing is missing a plug it’s also either wired in or tied into the same harness that runs through the front bumper that connects to the airbag sensors on the front. Only odd thing I have seen or if you know if a trailer plug could be causing these issues because I noticed my car has one hooked up.

From what I could see one is definitely yellow the other one might be black. I’d have to take another look to confirm but should only be two wires.

And just did some looking and my bad not a trailer cable it’s just the block heater cord that runs across the whole engine looked different at first.

Okay, it is solid yellow and green with black stripe.

Yes, definitely the color which makes me think it’s not factory wiring, and the previous owner must have done some wiring into the loom themselves.