Quick electrical question

[404pug Avid PP Poster! Find all posts View Profile Close 404pug]

I have installed a solid kit dual battery monitor. I picked up an ignition source at the rear of the centre console for the main battery . This turns the main battery monitor off when the ignition is off. Good. I have power from my second battery for the aux but his stays on all of the time . Bad? Or does it draw so little power as to be inconsequential? I also have a spare New Pro Tech switch which I planned to use to turn the aux monitor off. The wiring diag it came with has it running throufh a relay but as I have a 3 amp fuse in there anyway I was planning to do without. The wires from it are: Green- Supply;Black- earth; Red/yellow- from relay. 86; Dash ligh- red/yellow [not to worried about this one].
The question is can I just put this in either the power or earth from the aux monitor as a simple on/off switch? If so , which wires where? If this is a no go I can simply put in a simple on/off switch into the power lead from the aux monitor? Thanks

[JohnLynn Senior Member Find all posts View Profile Close JohnLynn]

Looks like your ignition source simply powers the main monitor (as you have found)
The way solid kit have done it is install a relay from the ignition source to pin 86 (other side of coil 85 to ground) then used the relay contacts 30/87 to switch the negative wire/s from the monitor to earth. This presumably switches the monitor completely off for both batteries.

[404pug Avid PP Poster! Find all posts View Profile Close 404pug]

Thanks. Managed to get it working with red/yellow and black.