u/Particular_Fee2642

Hi everyone,

I'm having an irritating issue with an aftermarket front camera on my 2015 Toyota Corolla, and I'm hoping someone here might have some insight.

I installed it myself.
It’s a front-facing camera, so it is NOT wired to the reverse lights.
Instead, I hardwired the camera directly to the fuse box. It receives continuous power as long as the car is turned on, and I access the video feed through an app on the car's screen.

The Problem:
The 4-pin connector (specifically the female side coming from the main cable/monitor, as seen in the attached screenshots) is getting noticeably hot. As the temperature increases at this connector, it directly affects the clarity of the image on the screen, causing the video signal to become distorted or unstable.

What I've Ruled Out:
I reached out to the seller, and they assumed it was an unstable power source or a reverse light wiring issue. However, I have personally tested and confirmed that the power supply is completely stable, and the voltage/current has no issues.

My Questions:

1. Has anyone experienced a similar issue with these 4-pin connectors overheating?
2. Could this be a short inside the extension cable, a faulty camera unit pulling too much current, or a grounding issue?
3. Should I just try replacing the main cable, or is the camera itself likely the culprit?

Any advice on what to check next would be greatly appreciated!

السلام عليكم يا جماعة،
حبيت أشارككم قصة ٣ قطط (ذكرين وأنثى) لقيتهم بالشارع قبل شهر تقريباً.
وقتها كان عمرهم حوالي أسبوعين بس، وأمهم مالها أي أثر وكانوا يقطعون القلب من صياح الجوع.
طبعاً ما هان علي أخليهم، أخذتهم للبيت، روشتهم، جهزت لهم مكان دافي يقعدون فيه، وبديت أُرضعهم حليب.
ما شاء الله تبارك الله، الأسبوع هذا بانت عليهم الحيوية بشكل كبير! صاروا يلعبون وينطون بكل مكان، وبدأوا ياكلون الأكل المعلب، لكن لسه يرضعون شوي (يعني باقي لهم طقة بسيطة وينفطمون تماماً).
إذا انفطموا واعتمدوا على نفسهم، إن شاء الله أرجع أطلعهم برا البيت في الحارة، بس طبعاً بكون متكفل فيهم؛ أتفقدهم وأحط لهم أكلهم وشربهم.
لكن.. إذا في أحد له نية يربي قطط بلدي وتكون في بيئة آمنة جوا البيت، يتواصل معايا خاص وأنا بنفسي أوصلهم له لحد عنده هنا في جدة.
على فكرة، القط البلدي مظلوم عندنا! تراه لعوب أكثر من الشيرازي، وذكي جداً، والأهم من هذا كله، تساقط شعره أخف بكثيييير.
تمنيت صراحة لو كان عندي قط بلدي من زمان (كانت عندي قطة شيرازي في الماضي وأكثر شيء تعبني معاها هو شعرها وتساقطه في كل مكان).
اللي حاب يتبنى أو يعرف أحد مهتم، يراسلني. ولا هنتوا عطوا البوست Upvote عشان يرتفع ويوصل لأكبر عدد ممكن.

I decided to test 4 popular OBD2 adapters on my Toyota Corolla 2015 GLI, to see which one actually delivers on its promises.
I used Car Scanner Pro app for all tests. Prices ranged from 20 SAR ($5) to 80 SAR ($21).

The Contenders (See Images):

1. OBD Advanced (~$5 - Amazon)
2. ELM 327 Mini (~$5 - AliExpress)
3. KONNWEI (~$21 - Amazon)
4. KINGBOLEN WiFi (~$15 - Amazon)

The Breakdown:
1. Features & Coding (The Biggest Difference)
• The Winner: KINGBOLEN (Device #4). It was the only one that unlocked the full "Coding & Service" menu. I could access anti-theft settings, light configurations, and power window tweaks.
• The Failures: Devices #1 (OBD Advanced) and #2 (ELM 327 Mini) were completely useless for coding. The app flagged them as "Faulty" immediately.

2. Performance & Speed
• KINGBOLEN takes the lead again. Because it connects via WiFi, the Live Data refresh rate is much higher compared to the Bluetooth models. Pairing is instant and very stable.
• KONNWEI (Device #3) is very well-built and stable for basic diagnostics, but couldn't match the Kingbolen in feature access.

3. Technical Stability (The Proof is in the Errors)
If you look at the "ELM327 errors" screenshots I attached:
• Devices #1 & #2 show hundreds of "Incorrect line ending" errors (over 370 errors!). This is a clear sign of a cheap, fake firmware chip.
• Device #4 (KINGBOLEN) shows almost zero errors, meaning it handles the ELM327 protocol correctly.

The "WiFi" Trade-off (Important!):
There is one catch with the KINGBOLEN: Since it uses WiFi, your phone might disconnect from your cellular data (4G/5G) while you're using it.
This can be a bit annoying if you need to Google a fault code or watch a YouTube tutorial while still connected to the car. You'll have to toggle back and forth.

Final Verdict:
• Best Value: KINGBOLEN WiFi. At $15, it outperformed the more expensive $21 Konnwei and unlocked all professional features.
• Avoid at all costs: Anything in the $5 range (Devices #1 and #2). They are literal e-waste and can't do anything beyond reading very basic engine codes (if you're lucky).