Hi
If some of your have following any of my posts you will probably be aware that I have just brought a Smartcom self-switching relay but it didnt come with much instructions.
FYI - it doesnt need wiring to the alternator so I just need a had with the terminals
It has 5 terminals and an adjustment screw. The terminals are marked as follows:
Rightside:
+12V permanant Live O/P
Fridge O/P
Aux Battery O/P
Leftside:
+12VFused I/P
OV Earth I/P
Now i am just guessing here but I would have thought that the O/P & I/P mean Output and Input
So would I be right in suggesting that I run a:
live from my starter battery to the +12vFused I/P?
Earth from my starter battery to the OV Earth I/P or just earthed to the body?
Live from Fridge O/P to fridge switch
Live from Aux Battery O/P to Live on LB
And as for the permanant Live O/P I can only think that this would be for towing purposes i.e lights on caravan
Is that right? any other suggestions?
Many thanks
Help wiring my smartcom relay
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Help wiring my smartcom relay
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- AngeloEvs
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Re: Help wiring my smartcom relay
...... 10 out of 10 and a gold star! I would say you have it sussed! 

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Re: Help wiring my smartcom relay
Fantastic
Thanks for giving me some confidence
Cheers
Thanks for giving me some confidence
Cheers
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Re: Help wiring my smartcom relay
When you have it all wired in, start the engine and you should hear the relay 'click' on once the ignition warning light has gone out ( three to four seconds on mine). If not then try a quarter turn on the adjustment until it bursts into life (just use a pen to mark on it where you started from !) Nice little unit runs my fridge & bits a treat.
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Re: Help wiring my smartcom relay
I wired a little light into mine so I could tell when it was switching ok !
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Re: Help wiring my smartcom relay
I have just installed a SMARTCOM with the usual lack of instructions !
Just wanted to check what others have found to work in wiring theirs up,
Input
- ve & + ve are obvious
Output
The feed to leisure battery & fridge obvious
The +12v output where does that go, interior lights ? does it even need to be connected, as if it supplies lights the switch will break the circuit, so no load ?
Trouble is that even when the ignition is off the fridge is still running
Do I need to adjust the potentiometer ??
Cheers
Mike
Cheers
Mike
Just wanted to check what others have found to work in wiring theirs up,
Input
- ve & + ve are obvious
Output
The feed to leisure battery & fridge obvious
The +12v output where does that go, interior lights ? does it even need to be connected, as if it supplies lights the switch will break the circuit, so no load ?
Trouble is that even when the ignition is off the fridge is still running
Do I need to adjust the potentiometer ??
Cheers
Mike
Cheers
Mike
- bigherb
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Re: Help wiring my smartcom relay
The 12v output is just if anything needs to be connected without going through the relay more used when it is fitted for caravan use. The relay will still be switched on for a while after the engine as stopped until the battery loses it surface charge, give it a while and recheck the fridge.
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Re: Help wiring my smartcom relay
I wasn't entirely sure of how the device worked that makes sense , I just wasn't sure what happened
Cheers
Mike
Cheers
Mike