You have connected all the wires for your new Android headunit and found one of the features not working. This is common with video in, video out, and 360 cameras. But it could be any amplifier connections, sub, or cables on the supplied loom.
Problem
The problem is that the same loom can be used for many different Android headunits sols by the same and different sellers. Not all of these head units will support all the features that the cables can, and it is cheaper to bundle up the same wiring for every different configuration of the headunit, from the base model to the maxed-out version.
Not working
This can mean wires that don’t do anything when you connect them. It looks like you have features not working that you expect to work.
If you have purchased the fully featured version, you could reasonably expect every wire connection to do something, but this is not always true. If you bought the cheaper option with fewer built-in features, it would be common for some cables to be nulled.
Not understanding what the vendor means by ‘Video Out’ and under which circumstances the headunit will make an output for video_out can cause disappointment.
Confirming any features before purchasing with the vendor you are unsure about can avoid disappointment when it doesn’t work quite how you were expecting.
Check
The first step in resolving the problem is to check what you put in the basket and which version you have paid for. Check your confirmation email and the purchase receipt, and see that you have been sent what you paid for.
When you know which model you have purchased, check which features are standard on that version. Don’t just look at the first picture that shows every feature if you bought the base model. You need to drill down into the finer detail of the listing and get to grips with what the features mean.
Optional Extras
Factor in any optional extras you paid for, the extra features that should be included.
Expectation
Now you will be in the best position to check that what you expect to work is connected and working; if something isn’t working, maybe you have found out why? You can’t expect the vendor to ship unpurchased features.
If you are unsure that the feature you expect to be present is what you assume it is, contact the vendor before purchasing. They will be more than happy to answer your questions. You can’t assume that a cable included for a feature will mean the feature is enabled in the headunit.
Some features are enabled in the firmware, but most are extra chips on the mainboard. Having the fully populated board will often give you the most features but a confirmation of anything unwritten is still required.
Easy
It is much easier to get things straight with the vendor before purchasing, with it all in writing, than trying to get your money back later when things are not as you assumed they would be.
