CaMpylobacter Posted December 5, 2010 Share Posted December 5, 2010 ^ that'd be the go tachometric relays they're often called. Quote Link to comment Share on other sites More sharing options...
CaMpylobacter Posted December 5, 2010 Share Posted December 5, 2010 had a google around and there's a few pages about wiring them up. search tachmetric relay can be found in all sorts of cars, from peugeots, to vl commys, to jags, sierras, all sorts. apparently vl v8s have one that only pumps when getting a pulse from the ignition system, thus car has to be at least cranking or running to have pump going. sounds super easy being in the auto electrics game you'll have access to these Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 6, 2010 Share Posted December 6, 2010 Anyone know a part number for one of these inertia switches? Sounds way better than adding more wires Quote Link to comment Share on other sites More sharing options...
cletus Posted December 6, 2010 Share Posted December 6, 2010 Isn't that on injected cars only?? /wrong thread yes correct, doesnt apply to carb`d cars. probably a good idea though. you could run a relay off oil pressure switch, and a momentary switch as well to prime it before starting.......make the owner feel like hes starting a spitfire ignition- check neutral-check prime fuel-check starter-engage select first, chocks away biggles, tally ho what Quote Link to comment Share on other sites More sharing options...
barf Posted December 11, 2010 Share Posted December 11, 2010 just to throw in a fresh idea, jaycar sell voltage switch kitsets. knowing that theres +13v when the alternator operates, you could control a relay when battery voltage is greater than say 12.9v http://jaycar.co.nz/productView.asp?ID=KC5377&CATID=25&form=CAT&SUBCATID=347 EDIT: possibly not an ideal solution, high electrical loads could swith the pump off... Quote Link to comment Share on other sites More sharing options...
SloNLo Posted December 11, 2010 Share Posted December 11, 2010 just to throw in a fresh idea, jaycar sell voltage switch kitsets. knowing that theres +13v when the alternator operates, you could control a relay when battery voltage is greater than say 12.9vhttp://jaycar.co.nz/productView.asp?ID=KC5377&CATID=25&form=CAT&SUBCATID=347 EDIT: possibly not an ideal solution, high electrical loads could swith the pump off... relayed off charge light then - if charge light is off pump is on? about the same as running it off oil pressure switch. Quote Link to comment Share on other sites More sharing options...
R100 Posted December 11, 2010 Author Share Posted December 11, 2010 Customers car came in. Had planned on connecting it up through the alternatr warning light. Turns out it has some strange alternator with no warning light output. In fact the only output on the alternator is the main battery terminal, nothing else. Second choice was fit an oil pressure switch but ran out of time so i ended up connecting the fuel pump to the ignition via a relay through a seperate switch as per customers insructions. I did locate a few different tachometric relays last week. But no one has any wiring diagrams for them. They are factory equiptment for cars such as BMW, citreon etc. So they have a large plug with 6 to 8 wires. I could of searched through some wiring diagrams but it all got a bit hard so decided on wiring in through the alternator light. But yeah, that didnt go as planned either.. Quote Link to comment Share on other sites More sharing options...
EURON8 Posted December 11, 2010 Share Posted December 11, 2010 Wait wouldnt hooking it up to the alternator warning light be kinda lame if your alternator packs in, cause depending on the car you can happly drive quite some time on just the charge in the battery. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted December 11, 2010 Share Posted December 11, 2010 yes but then you just get creative and if you need to get home then just pull the wire and jame it on full time Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 12, 2010 Share Posted December 12, 2010 when alternator warning lights pack it, most of the time it thinks that its always charging, not the other way around, so normally it would just keep working the same as before i found a tachometric relay for $40 but the link is at work, i'm going to buy one of these as its the easiest and best option imo Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 12, 2010 Share Posted December 12, 2010 heres the switch http://www.evworks.com.au/index.php?product=SWI-FCO Quote Link to comment Share on other sites More sharing options...
ryanfels Posted December 12, 2010 Share Posted December 12, 2010 I think i remember WDE BDY/Callum say he was using an LPG relay? Does that make sense? Quote Link to comment Share on other sites More sharing options...
R100 Posted December 13, 2010 Author Share Posted December 13, 2010 heres the switchhttp://www.evworks.com.au/index.php?product=SWI-FCO Thats neat ! Quote Link to comment Share on other sites More sharing options...
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