LittleRedSpirit Posted August 15, 2015 Report Share Posted August 15, 2015 I'm adding a relay to control my power feeds to my data logger and wideband so they don't run all the time. It will just be a simple system that is triggered by ignition power being turned on. My battery used to run down in about a week and a half the way it was in my ae71 without it. Want to improve that. Anyone know a relay type with 2 switched power circuits so I can use a single relay and switched 12 v trigger to feed both the logger and the wideband with separate 12 v circuits? Quote Link to comment Share on other sites More sharing options...
B.L.Z.BUB Posted August 15, 2015 Report Share Posted August 15, 2015 Why not just use a 5 pin always open relay? Quote Link to comment Share on other sites More sharing options...
Banjo Posted August 15, 2015 Report Share Posted August 15, 2015 Is there any specific reason why you cannot feed data logger & wide band from the same source ? Once the twin relay you describe is closed, they will be connected together. Just join the 12V feeds to those devices, & connect that connection to a ordinary 5 pin auto relay, as suggested. Cheers Banjo Quote Link to comment Share on other sites More sharing options...
parrot Posted August 15, 2015 Report Share Posted August 15, 2015 Spare fuel circuit relay Quote Link to comment Share on other sites More sharing options...
LittleRedSpirit Posted August 15, 2015 Author Report Share Posted August 15, 2015 Because it makes you choose one circuit or the other, not giving both at once which I require. Ideally both pieces of electronics would have a different feed from the fusebox that comes on at the same time with accessory power. I could fit 2 relays but I really just want to fit one for space reasons if possible and I don't want to jack them both off the same pin with both devices having different fusing requirements and possibly interfering with one another somehow. Quote Link to comment Share on other sites More sharing options...
LittleRedSpirit Posted August 15, 2015 Author Report Share Posted August 15, 2015 Looking at whats out there in iso relays, there are 5 pin types that choose one circuit or the other or power both at once but nothing that takes two 12v sources and switches them both without them coming from the same source. I think I just need 2 relays and be done with it. Quote Link to comment Share on other sites More sharing options...
Banjo Posted August 15, 2015 Report Share Posted August 15, 2015 You can fuse them separately after the single pole relay if you need to. However, if you want to place the fuses before switching them on with a relay, then you need a 12Vdc 2 pole N.O. or 2 pole changeover relay. Cheers Banjo Quote Link to comment Share on other sites More sharing options...
Banjo Posted August 15, 2015 Report Share Posted August 15, 2015 This might work for you. http://www.ebay.com.au/itm/12V-DC-10A-DOUBLE-POLE-RELAY-/271926817933?hash=item3f5019f48d Cheers Banjo Quote Link to comment Share on other sites More sharing options...
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