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Source of 12v for backup camera 97 Liberty?
On a trip and have no 12v to the backup camera all of a sudden. Anyone know where that fuse is? Checked all the fuses in the panel in Bay 2 and can’t find a bad one. Was working earlier this morning. Thanks
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9 Replies
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Check the number on the power wire at the camera or monitor. Liberty numbers every wire and that allows anyone to find the fuse or circuit breaker in the electric compartment. I may be a part of a wire bundle with multiple wires.
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Thanks. I think it is M
1999 XLV X-6872, liberty #440 -
PIA every time you have to chase a fuse. I’m in the process of converting my “fuse wall” in the second bay to the newer fuses that light up when blown.
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Joel: Is that just a matter of pulling the old fuses and replacing them with the lighted fuses?
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I found it. Not in Allen Bradley but a circuit breaker under the driver’s window.
Evidently at the same time, my entire bus air went down, evidently this breaker is also power to the bus air switch, it is CB79 and labeled “driver heat module”. I did not make the connection.
To try and solve these two problems and one other unrelated en route, I pulled into a truck stop to see if I could get both going. Only found it just now.
As an indirect result of this and trying to analyse everything from a truck stop parking lot (i.e. do too much on the side of the road), I came up with a larger problem. In looking at all bus air components, I opened and evidently failed to latch the engine bay doors before setting off again. Thanks to a friendly truck driver some miles up the road, I luckily caught it before the RH door completely removed itself from the bus, but I have some engine bay door hinge and minor RH rear door damage, luckily no damage to the bumper or light panel but that door did contact my motorcycle trailer and damaged it as well, probably the worst damaged of anything.
I am now at my destination and enjoying a beer.
Wish I had checked these breakers at the truck stop, I forgot that there was dash 12V as well as 24V distribution in there. Would have saved myself a lot of grief. If your bus air and your backup camera go down simultaneously, here’s the clue.
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My backup camera quit working. But the bus air works. So maybe something else.
1999 XLV X-6872, liberty #440 -
My backup camera quit working and I had to replace it. Installed the new and she fired right up.
R
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Dick: yes
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In a little more focused mood here at home base, I stopped assuming and started analyzing. Bus air circuit in question on CB70 is 24V. I swapped breakers with the driver heat module to try and isolate whether the problem is a breaker or an intermittent short in the circuit. I then cycled dash heat on for a few minutes (smoked out the Webasto, which was overdue for that) and bus air ran for a while before tripping breaker again during a short drive.
I moved the backup camera off of where Liberty put it, tied to that bus air/heat switch to another unswitched 24V breaker nearby as well, just in case the short is in that circuit. This gives me backup camera with key off which is a nice feature. I’m getting a little voltage drop to the 12V wire at the camera which is unrelated to power to the backup camera so I need to see where on Allen Bradley the original backup camera itself was wired by Liberty since the replacement Voyager camera uses the original backup camera wiring with an adapter harness.
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