discomikey Posted December 13, 2009 Share Posted December 13, 2009 a bit off topic, but im going to wire a second beacon up to my vehicle, and i was wandering if the existing wiring will stand up to adding a second beacon, in paralell to the first beacon. i thought it should because headlights and spotlights are wired in paralell, and the bulbs arent as high power in beacons, but they have the motors aswell, and i dont want to start a cab fire! cheers Quote Link to comment Share on other sites More sharing options...
mpb Posted December 13, 2009 Share Posted December 13, 2009 If they are 55 watt rotating beacons they will draw just over 5 amps each. So if your running two in parrel you will be drawing approx 11 amps. I would run these through a 30 amp relay fused at 15 amps using 17 amp cable. If you split the output from the relay to feed each beacon, you could down size the output cable to 8 amp for each leg. Quote Link to comment Share on other sites More sharing options...
western Posted December 13, 2009 Share Posted December 13, 2009 my 4 rotator light bar is wired in pairs outers & inners each pair on seperate switch, no need for relays, normal car 17amp wiring reel from Halfords does the job easily. Quote Link to comment Share on other sites More sharing options...
discomikey Posted December 14, 2009 Author Share Posted December 14, 2009 heres my thoughts, as from the factory it can be fitted with either dual or single(standard) it should have the wiring, at least up to the switch big enough to cope with duals, unless they install a relay, but then i have to route another live through the bonnet, cab pillar etc. so if the wiring can cope with it up to the switch, provided the switch can cope (carling) i should be able to run the second live straight from that shouldnt i? Quote Link to comment Share on other sites More sharing options...
LandyManLuke Posted December 14, 2009 Share Posted December 14, 2009 Your argument is based completely on assumptions. You either need to check and identify the wire you have, or replace it with wire that is known to be of the correct size. Trying to argue all the hard bits away to make it an easy job is how you melt wires and start electrical fires.... Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted December 14, 2009 Share Posted December 14, 2009 Trying to argue all the hard bits away to make it an easy job is how you melt wires and start electrical fires.... Great way of procrastinating though! Just go and do it properly, it won't take long at all. Quote Link to comment Share on other sites More sharing options...
discomikey Posted December 14, 2009 Author Share Posted December 14, 2009 thats why i ran it past you lot. ill check the wiring sizes. Quote Link to comment Share on other sites More sharing options...
discomikey Posted December 14, 2009 Author Share Posted December 14, 2009 update, ive checked the size, its not 17amp so i am going to stick a relay in there. stole the power source from a different broken application which eliminates the need for rewiring. the wires are the correct size so now all i need is the relay because i have the relay power source, the relay earth the beacon power source. all ill have to wire in is the output from the relay and the earth wire, eaisly done and very short distiances. thnks for the help guys! Quote Link to comment Share on other sites More sharing options...
discomikey Posted December 14, 2009 Author Share Posted December 14, 2009 oh and of course ill ad dthe appropriate fuse Quote Link to comment Share on other sites More sharing options...
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