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JeffSFL · 11-25-2021, 02:38 PM

Hello, I have a 2005 Mountain Aire 4303. It has a pioneer AVH 3300 NEX single din radio with a 7 inch screen. This is my back up camera monitor. the problem I’m having is a washed out view and no ability to adjust the contrast. the Pioneer has a “parking brake lockout” that won’t allow you to adjust certain settings (video contrast, brightness, etc) the ones I think I need, unless the parking break is engaged. This is rig has a parking brake but as you know it’s a pull out air brake system. It does not appear to trigger the Pioneer so I can change the settings.

Anyone else deal with this issue or can recommend a fix? I’m new to this forum and really appreciate all the knowledge being shared.

Thanks

THenne1713 · 11-25-2021, 11:25 PM

The PARKING BRAKE (switch) simply applies a ground to a specific wire for the Monitor controls, so you can simply identify WHICH wire and ground it? Search for manual by Brand/ Model if you do not have the manual? Also recommend you CLEAN camera LENS, esp. after traveling in rain or overnight rain and if camera mounted above clearance lights, move it to BELOW and see if that helps? Good Luck

JeffSFL · 11-27-2021, 06:08 AM

Quote:

Originally Posted by THenne1713

The PARKING BRAKE (switch) simply applies a ground to a specific wire for the Monitor controls, so you can simply identify WHICH wire and ground it? Search for manual by Brand/ Model if you do not have the manual? Also recommend you CLEAN camera LENS, esp. after traveling in rain or overnight rain and if camera mounted above clearance lights, move it to BELOW and see if that helps? Good Luck

Thanks @THenne1714 I found they make a bypass switch for such things. Apparently it’s not a simple ground, it needs some pulsing on the line to simulate the parking brake. So I ordered the bypass. At $9 I figured it was low risk

JeffSFL · 11-30-2021, 01:27 PM

I purchased the bypass switch for the Pioneer, but when I pulled it out of the dash it appears that the previous installer didn't connect the light green colored wire to the harness, so I simply connected the light green to the light green in the harness and all of the settings are functioning when the rig is parked.

Sadly adjusting the brightness and contrast of my screen did nothing to help the look of the backup camera. I fear it's past it's prime and needs replacement. I cleaned the lens as was recommended and the placement is already below the marker lights on the upper lip of the back. So placement is good, and it's clear glass but still I have a screen image that looks like I'm pointing the camera directly into the sun.

Can't think of anything else to try but replace. Hope its as easy as a plug and play.