Jon W Posted August 30, 2007 Share Posted August 30, 2007 Sorry I am sure this has been covered before but whenever i use the search function I can't find anything i need. I would like to fit a battery cut off to my 90. I would like the radio to stay wired in so that the time remains on it and radio channels. I have a PTO winch so wont need one which handles mega amps. But will a standard switch do as i have heard of contacts melting. These are the ones i am looking it.# http://cgi.ebay.co.uk/FIA-APPROVED-BATTERY...bayphotohosting probably best as has a resistor to stop it frying the alternator should be be turned off. also looks like it has terminals so i could leave the radio plugged in. Or a cheap one and then i would have to some how wire the radio http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...s_promot_widget Thanks in advance Jon Quote Link to comment Share on other sites More sharing options...
white90 Posted August 30, 2007 Share Posted August 30, 2007 http://forums.lr4x4.com/index.php?showtopi...battery+cut+off Quote Link to comment Share on other sites More sharing options...
Jon W Posted August 30, 2007 Author Share Posted August 30, 2007 Cheers Tony. So i guess i go for the FIA switch then. Out of interest have you wired it so the radio presets can be saved?? or do you not use it unless necessary. Cheers Jon Quote Link to comment Share on other sites More sharing options...
Mark90 Posted August 31, 2007 Share Posted August 31, 2007 Go for the FIA switch and to keep the radio powered up bridge the two big terminals with a small fuse. Quote Link to comment Share on other sites More sharing options...
white90 Posted August 31, 2007 Share Posted August 31, 2007 Radio is of little importance really to me the presets I have are quickly re entered the switch is only for emergencies so doesn't get activated to often Quote Link to comment Share on other sites More sharing options...
BigSi110 Posted August 31, 2007 Share Posted August 31, 2007 I've got one of the normal isolator switches - about £7.50 from memory. Easy to fit, even for a dunce like me, but I needed a grown-up to wire and crimp the terminals as I haven't got round to buying or borrowing tools that would do the job. Radio can be a pain, but I only listen to Radio 2, so hardly an issue. Losing my CD track can also be annoying, but 5 seconds prodding on the relevant button soon sorts that. The only other problem is the stereo display insists on going into a DEMO mode. Again 5 seconds to switch off. So, apart from that, no problem. I use mine wherever my 110 is parked. Quote Link to comment Share on other sites More sharing options...
white90 Posted August 31, 2007 Share Posted August 31, 2007 take care not to operate the switch when the engine is running then as you can fry the alternator Quote Link to comment Share on other sites More sharing options...
SteveG Posted August 31, 2007 Share Posted August 31, 2007 Who knows if you have to do any extra stuff to a TD5 for a battery cut off switch? Cheers Steve Quote Link to comment Share on other sites More sharing options...
Lewis Posted August 31, 2007 Share Posted August 31, 2007 Who knows if you have to do any extra stuff to a TD5 for a battery cut off switch?Cheers Steve We never quite figured out how to get the FIA switch to do its job on Andrews comp car, it still doesnt work now IIRC Peter Graves is running a TD5 and FIA Quote Link to comment Share on other sites More sharing options...
simonr Posted August 31, 2007 Share Posted August 31, 2007 The big issue with isolator switches is the resistance they add. You can drop 150 - 200A peak flow through a single switch! A better, higher current solution is to use a pair of anderson type connectors. One just having a short loop of wire connected between the terminals. You will still drop some current, but nowhere near as much. Mark90 has the best solution to the radio presets, simply a small fuse. Anything you are going to need to remove the link for (including security) is soon going to blow the fuse. Si Quote Link to comment Share on other sites More sharing options...
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