in coming positive

[dubslug]

hi all,
just looking at wiring my stereo in to both batteries via a relay as per wiki...
how ever i am slightly confused as to terminal 86 being incoming positive.. where should i be getting this feed from?? is it 12v switched/ permanent? etc???


as it stand my stereo is wired in using main battery.. the permanent and switched live are joined together before stereo will this still be case after the relay, sorry im a little confused

cheers

[CJH]

Hi Dubslug

As I read that diagram, I think 'ING' is just a typo, and rather than meaning 'incoming' it means 'ignition controlled', so it's a 12V switched live.

As per the diagram, your radio's permanent live (for maintaining preset memories and other settings) can come from either battery, presumably because it draws only a very low current. I haven't done this mod yet, but when I do I don't think I'll take that memory backup permanent live from the relay-switched feed, as I'm guessing there's potential for the memory to be wiped during the brief switch over that the relay will do once the engine is turned on.

[bigherb]

Bit pointless fitting a relay if you have a leisure battery and split charge then it is connecting to the starter battery anyway.

[CJH]

Bit pointless fitting a relay if you have a leisure battery and split charge then it is connecting to the starter battery anyway.

So you mean just wire the radio to the leisure battery - when the engine's off the radio's fed from the leisure battery, when the engine's running they're both connected. Makes sense.

[ghost123uk]

That ^^^ is the best way