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Old 09-04-2019, 08:34 AM   #1
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Question Home made replacing weldex monitor, how tilt/defog is working?

In my Monaco, the B&W CRT Monitor, Weldex WDRV-3467M does not work anymore, I was backing up watching the screen and the picture reduced to a tiny white dot at the center and went off, like the good old way CRT are doing... except this was its final one.

I'm leaving soon, and price to replace the unit in Canada is astronomical. I replaced it with a $20 7" LCD Monitor used for car backup camera, I checked the wiring of the 6 pins camera, what I found on the net says it was female view of the camera plug, but in fact it was the male view from behind the monitor... as in this post "Using installed wiring for backup camera" so be careful if you use this pinout.

I removed the old monitor and plugged it on my bench to verify, I then made a small harness to plug the camera on the LCD screen. It is working fine. Basically I made this harness:
RV Cams Weldex 6-Pin Tilt Camera Breakout Adapter

But I am not sure how the tilting is working? On the monitor, doing nothing it seems the pin for MOTOR+ and MOTOR- are outputting 5V, and pressing the up or down button makes the voltage drop to 0V. Is this how tilt should work? If yes I can put a small 12v to 5V device (usb car charger) and wires buttons to do the same thing.

Same for defogging. When on the monitor I press the defog button, the small red LED lit, but I see nothing different on any pin of the camera plug?

Any expert on the weldex camera system knows how the tilt is working?

Thanks in advance
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Old 12-08-2019, 07:24 PM   #2
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I am looking to do the same thing

How did this work out? I am looking at doing the exact same thing. What monitor did you buy? Did it have three inputs? How did you mount the new monitor? Did you ever get the tilting working?
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Old 12-09-2019, 07:03 AM   #3
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I bought a cheap 7" monitor from amazon. With the original CRT monitor I opened it and output 3 wires (+12VDC, GND, video) to plug the monitor. I used the suction cup of the LCD monitor and put it on the CRT screen. Everything is still working like tilting etc. so I let the old CRT in place for the moment.

The MH is winterized for almost 6 months now and I'll continue to work on it next spring
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