 914/6 Conversion Fuel Pump - Switch and Fuse |
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| mmascari |
 Dec 11 2021, 05:40 PM
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#1
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Member  Group: Members Posts: 321 Joined: 1-September 14 From: Concord, CA Member No.: 17,850 Region Association: None  |
When I built my 914/6 conversion I installed a pierburg fuel pump. I connected the hot from fuse panel 8 to a switch, then to a 10amp fuse then to the fuel pump. I have been blowing the 10amp fuses for some reason not sure why. Do I need a fuse between the switch and the pump? If it is recommended then is 10amp the correct size? I am thinking about just removing the switch and the fuse entirely. How are others doing this?
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| Luke M |
Dec 11 2021, 06:03 PM
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#2
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Senior Member Group: Members Posts: 1,372 Joined: 8-February 05 From: WNY Member No.: 3,574 Region Association: North East States 
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QUOTE(mmascari @ Dec 11 2021, 04:40 PM)  When I built my 914/6 conversion I installed a pierburg fuel pump. I connected the hot from fuse panel 8 to a switch, then to a 10amp fuse then to the fuel pump. I have been blowing the 10amp fuses for some reason not sure why. Do I need a fuse between the switch and the pump? If it is recommended then is 10amp the correct size? I am thinking about just removing the switch and the fuse entirely. How are others doing this? When I wired my brothers 914-6 conversion this is what I did. I used the original fuel pump wire to trigger a relay which then sent power to the fuel pump. The hot wire to the relay is fused. I moved everything to the front trunk. I believe I posted pics on his build thread. Was pretty easy to do. |
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| mmascari |
Dec 11 2021, 07:04 PM
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#3
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Member Group: Members Posts: 321 Joined: 1-September 14 From: Concord, CA Member No.: 17,850 Region Association: None |
QUOTE(Luke M @ Dec 11 2021, 04:03 PM) QUOTE(mmascari @ Dec 11 2021, 04:40 PM) When I built my 914/6 conversion I installed a pierburg fuel pump. I connected the hot from fuse panel 8 to a switch, then to a 10amp fuse then to the fuel pump. I have been blowing the 10amp fuses for some reason not sure why. Do I need a fuse between the switch and the pump? If it is recommended then is 10amp the correct size? I am thinking about just removing the switch and the fuse entirely. How are others doing this? When I wired my brothers 914-6 conversion this is what I did. I used the original fuel pump wire to trigger a relay which then sent power to the fuel pump. The hot wire to the relay is fused. I moved everything to the front trunk. I believe I posted pics on his build thread. Was pretty easy to do. I got rid of the relay board in the engine compartment. Do you have a switch in the dash? |
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| Luke M |
Dec 11 2021, 07:36 PM
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#4
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Senior Member Group: Members Posts: 1,372 Joined: 8-February 05 From: WNY Member No.: 3,574 Region Association: North East States
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QUOTE(mmascari @ Dec 11 2021, 06:04 PM) QUOTE(Luke M @ Dec 11 2021, 04:03 PM) QUOTE(mmascari @ Dec 11 2021, 04:40 PM) When I built my 914/6 conversion I installed a pierburg fuel pump. I connected the hot from fuse panel 8 to a switch, then to a 10amp fuse then to the fuel pump. I have been blowing the 10amp fuses for some reason not sure why. Do I need a fuse between the switch and the pump? If it is recommended then is 10amp the correct size? I am thinking about just removing the switch and the fuse entirely. How are others doing this? When I wired my brothers 914-6 conversion this is what I did. I used the original fuel pump wire to trigger a relay which then sent power to the fuel pump. The hot wire to the relay is fused. I moved everything to the front trunk. I believe I posted pics on his build thread. Was pretty easy to do. I got rid of the relay board in the engine compartment. Do you have a switch in the dash? I got rid of the relay board as well. I installed a hot start relay where the old relay board use to be. I had redone the wire harness so fuel pump wires where all moved to the front trunk. I then installed a new relay in the front trunk. Everything works as it should. Key on signals pump to trip relay and power up the fuel pump. I have two other relays next to the fuel pump. One relay will power the electric fans and a spare if ever needed. I ended up using a factory 914 relay socket. The one under the pass seat and wired it to my needs. Pics added.. Attached image(s)   
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