<>Electric Fuel Pump Problem Ray Brown writes:. Hi ZDoc,. I'm hoping to get a second opinion on an electrical question. I've installed a Holley electric fuel pump back by the gas tank and need a 12v, ignition switch enabled source, capable of providing 7.5 amps (the size fuse the pump calls for) My thinking is if I attach to the wire for the ign lead of the voltage regulator it will give me a 20amp, fused source that wont have power with the key in the acc position.. As best as I can tell from the factory service manual the only other thing that line is used for is some guages and the turn signal circuit. That would also give me a voltage source close to the oil pressure safety switch for the pump. There will also be a 7.5 amp inline fuse in the wire from the safety switch to the fuel pump. Any thoughts before I try to burn up my wiring harness :). Thanks for your help on the crankcase vent/PCV valve stuff. Once I did a little research and learned exactly how a PCV valve works it all made alot more sense. I had done almost exactly what you described in your last e-mail with the exception that I screwed the PCV valve into a pipe thread to hose fitting and used a regular hose T in the brake booster line. That way I could leave the PCV valve on the end of the factory style braided hose and didn't have to figure out another way to go from the 1" pipe from the engine down to the 5/8" (?) connection on the PCV valve.. Thanks Again, . Ray. Doc replies:. Hi Ray,. Doc here. First of all what year is your "Z"? If it is an early one then I highly suggest that you run a separate circuit to feed the electric fuel pump. If you tie into the circuit that you described then you stand a chance of overloading it and loosing the turn signals and the fuel pump. A simple fuse holder with the 15 amp fuse will surely suffice the be the feed supply for the Holley Monster pump. You may want to rubber mount the pump to isolate the sound some, for a more pleasant driving experience. I hope that this helps you.............. ZDOC OUT. . Ray replies:. Doc,. I'm always amazed at the number of people that seem to stay up as ridiculously late on the computer as I do!. Early 71, #09862. Maybe I'll just run a line directly from the extra lead that all battery cables seem to have these days, through the safety switch and back to the fuel pump. The switch should only be activated when the engine is running if it's working correctly. I could also run that line thrugh a hidden switch inside the car for added security against someone trying to "borrow" my car without permision!. Good point about overloading that circuit. All of my electrical stuff except the ammeter is working quite well right now, why take the chance of messing that up.. By the way, Holley ships the pump with a rubber insulator so I'll try that for now and maybe add to it later.. Thanks Again, . Ray. . Doc replies:. Ray, Doc here. I believe that you will find a hot lead pigtail coming from the fuse box as a spare taped to the harness if no one has disturbed the factory stuff. With the switch in a hidden location you will facilitate another backup anti-theft device for your "Z"! As I remember the lead is hot when the key is in the on position too.. Keep pressing on Bro................. ZDOC OUT. <> .