HU850 stereo removal.
Good evening.
I'll be fitting a GROM USB connection to my stereo.
Are there any tips when removing the stereo?
I've watched a couple of youtube videos. Some suggest disconnecting the battery. Am I correct that the negative terminal should be disconnected first to prevent error messages?
Another video suggests disconnecting the battery whilst the key is in position 2?
Any advice appreciated.
Tom
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