| phill | -- 06-11-2014 @ 7:31 PM |
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I'm installing a new pump but I do not know what wire to get power from so it only works when car's ignition is turn on [this is for a 6 volt positive ground FLAT-HEAD] help will be great appreciated....phill
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| CharlieStephens | -- 06-11-2014 @ 10:30 PM |
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I am not sure how to do it, I hope someone comes in to help, but what you really want is one that shuts off when the engine stops, like when you have an accident. Otherwise the pump will keep pumping gas into the accident scene. I am sure there is a way to do this but I don't\'t know the details. This might be a good post for HAMB, http://www.jalopyjournal.com/forum/ Charlie Stephens This message was edited by CharlieStephens on 6-11-14 @ 10:31 PM
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| TomO | -- 06-12-2014 @ 6:47 AM |
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The easiest [lace to pick up 6 volts when the ignition is on, is the primary side of the coil. You can also pick it up at the hot side of the gauges, the black with green tracer wire. If you are only going to use it to prime your carburetor, use a spring loaded switch. The best way to wire an electric pump so it replaces the mechanical pump is through an oil pressure switch. Here is a link to one way of doing it. http://www.how-to-build-hotrods.com/electric-fuel-pump.html Tom
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| supereal | -- 06-12-2014 @ 7:22 AM |
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If you are planning to use the electric pump as a primer, the spring switch fed from the accessory side of the ignition switch is best. If you are to use the pump as a replacement for the mechanical pump, you will need a steady power supply, so the switch should be on all the time the ignition is on. If you series the pump thru the oil pressure, it will not run until the engine does, defeating the use for priming. Modern cars use an inertia switch for safety that shuts off the pump if it detects a collision. If you plan to use the pump as the primary fuel supply, be sure it does shut off automatically when the carb is full, and that fuel pressure does not exceed three pounds, or there is a risk of carb overflow, a certain fire hazard.
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| phill | -- 06-12-2014 @ 1:45 PM |
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thanks for all the info..guy's but still can't find the right wire....how about putting in an ISOLATOR that would be used for trailer hook-up. WILL THAT WORK FOR ME????.........phill
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| cliftford | -- 06-12-2014 @ 3:25 PM |
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That's not necessory. Just follow what super said. To find the correct terminal on the ignition switch. get a test light. First find the terminal that is hot with the switch off. Don't use this one,then turn the switch to acc, another terminal will be hot. Don't use this one. Then turn the switch to ignition, and the 3rd terminal [ignition] will be hot. This is the one you want to use to power your fuel pump. An inline switch is still an option, although I don't see the need for it. You may need to remove the switch to do all this. Gene
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| phill | -- 06-12-2014 @ 6:29 PM |
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thank's for your help CLIFIFORD I found the wire and I work's great now I hope it solve's my vapour-lock prob. thanks everyone for your help...phill from CANADA
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