turbeau Posted September 15, 2010 Share Posted September 15, 2010 looked but couldnt find the answer. im installing an electric fuel pump to feed my trip webers. is there a guide for the install on here? where to mount? where to put positive and negative lines? rubber spacer? etc... 1971 240z carter pump Quote Link to comment Share on other sites More sharing options...
Challenger Posted September 15, 2010 Share Posted September 15, 2010 Are you wanting it to be turned on from a switch or automatically as long as the car is in run/crank? Run wires from the battery through a relay and then have the relay triggered by a switch or power from your ignition switch. Quote Link to comment Share on other sites More sharing options...
Moltar Posted September 15, 2010 Share Posted September 15, 2010 Nissan was kind enough to run wires for you already for a pump. The fuel pump wires are green and black and are located in the passenger side of the car, near the gas tank. They are part of the fuel tank sending unit wiring harness back there. They might be taped up in the harness (mine were). Then all you have to do is connected the terminals for the fuel pump fuse which is located near the fuse box. The terminal you are looking for has the two spade connectors making sort of a capitol T in shape. Both wires are green. Run a 20A fuse, and call it a day. This is from my experience on my 2/71 Z, so it should be the same for you with your 71. Quote Link to comment Share on other sites More sharing options...
Challenger Posted September 15, 2010 Share Posted September 15, 2010 Above is a little easier than my way. haha Wasnt sure if the 71 had a mechanical pump on the engine as well as an electric at the tank, looks like it does! Quote Link to comment Share on other sites More sharing options...
turbeau Posted September 15, 2010 Author Share Posted September 15, 2010 ill check that out. my car had a mechanical fuel pump up front, i will look for the green/black wire near the tank. no switch, i want it to run while key is in on position. Quote Link to comment Share on other sites More sharing options...
Moltar Posted September 15, 2010 Share Posted September 15, 2010 Above is a little easier than my way. haha Wasnt sure if the 71 had a mechanical pump on the engine as well as an electric at the tank, looks like it does! The 71 had a mechanical fuel pump only. Nissan had enough foresight to include provisions for an electric fuel pump when running the wires. The biggest issue I had was figuring out why my fuel pump wasn't getting juice. If you check the wiring diagram for the later 240Z's and you'll see that it has a 20A fuse outside of the fusebox. That is how I realized that Nissan wired the connector near the fusebox as an open circuit, waiting for you to connect the two wires, completing the circuit (and energizing your fuel pump). Ironically enough, I happened to pick up the fuel pump fuse connector at the junkyard when I was scrounging for OEM connectors. I'm glad I didn't cut that one apart for the connector! Quote Link to comment Share on other sites More sharing options...
dhartig Posted September 16, 2010 Share Posted September 16, 2010 My fuel pump is switch operated which acts kind of like a theft deterrent. Thankfully I haven't had to test out its effectiveness. Use rubber grommets to offset and dampen the noise transmission. Quote Link to comment Share on other sites More sharing options...
zgeezer Posted September 17, 2010 Share Posted September 17, 2010 The 71 had a mechanical fuel pump only. Nissan had enough foresight to include provisions for an electric fuel pump when running the wires. The biggest issue I had was figuring out why my fuel pump wasn't getting juice. If you check the wiring diagram for the later 240Z's and you'll see that it has a 20A fuse outside of the fusebox. That is how I realized that Nissan wired the connector near the fusebox as an open circuit, waiting for you to connect the two wires, completing the circuit (and energizing your fuel pump). Ironically enough, I happened to pick up the fuel pump fuse connector at the junkyard when I was scrounging for OEM connectors. I'm glad I didn't cut that one apart for the connector! Quote Link to comment Share on other sites More sharing options...
Jim Politis Posted August 23, 2021 Share Posted August 23, 2021 Looking to find out what the Amp draw is on a NOS elec. fuel pump. My car is a 1973 240Z. I was told that I can not use the prewired lines because I'm installing a internally regulated alternator? Quote Link to comment Share on other sites More sharing options...
NewZed Posted August 23, 2021 Share Posted August 23, 2021 4 hours ago, Jim Politis said: I was told that I can not use the prewired lines because I'm installing a internally regulated alternator? Who told you this nonsense? The wiring diagram shows a 20 amp circuit. Quote Link to comment Share on other sites More sharing options...
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