depends on the make/model of the head unit. OEM requires the use of a "lockpick" or "allgig" device. Newer clarions require a chip unit from ebay or a relay/toggleswitch. Older models can get by with grounding the parking brake sensor wire. I have a newer clarion so I bought a module on ebay for $20 and it works great. I didn't want to use a relay since they can be noisy when they kick on/off.
I've read that some of the newer players detect motion and there's no way to bypass that... and even if you can do it. it's probabaly illegal or might send a code to the computer (just guessing)... Probably a lot easier, safer, and maybe even cheaper to just buy a portable DVD player.
my reason for the bypass had nothing to do with DVD playback. I want my passengers to have the ability to modify a route or input an address into the nav unit without having to exit the freeway and stop completely. I mean, they have passenger airbag detection why not enable nav features if they detect a passenger? Also, I have my backup cam connected to a switch rather than the reverse wire so i can turn it on whenever I want. This lets me check on my trailer/tires while sitting at a traffic light or driving. Many safe reasons to bypass the restrictions...
I agree. With a stock nav unit, this is your best bet. With aftermarket, a simple relay will do the trick. I have my Pioneer bypassed so my wife and other passengers can watch movies on trips.
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