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> Fuel pump relocation and wiring
captjm
post Nov 22 2024, 09:03 PM
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I need some help with wiring a 914 fuel pump being relocated to the front fuel tank location exactly like the 75/76 914's. The car is a 1971 914/4 being set up for a carbureted 2.4 six cylinder. My question is about where to pick up the power to run the pump correctly.
I would like it to have any relay protections like the original if that is the way it is suppose to be. I think the positive power is to come from the engine compartment relay board from the forward connector pin 13? I plan on running the positive wire from pin 13 under the driver side rocker panel forward to to the fuel tank bay and picking up the ground from the closest grounding point nearest to the tank bay. Any comments or advice would be helpful. Thank you
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Literati914
post Nov 26 2024, 11:23 AM
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QUOTE(JeffBowlsby @ Nov 26 2024, 10:47 AM) *

..
The fuse for the FP circuit is the big 25A fuse on the relay board. Adding a secondary fuse inline...not sure how that will behave.


I feel like that big fuse is too much to catch an over heating FP wire by itself .. potentially leading to melted FP wires that are now running thru the tunnel, in the event of a short. An extra 8A in-line fuse just seems like a smart move imho. I've not heard of an extra fuse causing problems. Of course I'm no EE, either.
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captjm   Fuel pump relocation and wiring   Nov 22 2024, 09:03 PM
dtmehall   it was 40 years ago when i did this. i believe you...   Nov 22 2024, 09:12 PM
JeffBowlsby   It’s a 12 ga wire.   Nov 22 2024, 09:32 PM
dtmehall   it was 12 gauge for the fuel injection pump. i wou...   Nov 22 2024, 09:38 PM
davep   it was 12 gauge for the fuel injection pump. i wo...   Nov 24 2024, 12:24 PM
North Coast Jim   I ran the wire thru the tunnel wired as above. Bou...   Nov 24 2024, 08:22 AM
North Coast Jim   I ran a two conductor wire thru the tunnel wired a...   Nov 24 2024, 08:25 AM
dtmehall   below is a website to calculate wire size based on...   Nov 24 2024, 07:00 PM
SirAndy   If you still have the original wiring the fuel pum...   Nov 24 2024, 07:26 PM
bkrantz   If you still have the original wiring the fuel pu...   Nov 24 2024, 08:42 PM
dtmehall   That's a good idea. It wasn't possible in ...   Nov 24 2024, 07:36 PM
worn   That's a good idea. It wasn't possible in...   Nov 24 2024, 07:43 PM
worn   That's a good idea. It wasn't possible i...   Nov 24 2024, 07:44 PM
ClayPerrine   If you pull the fuel pump wire back and reroute it...   Nov 25 2024, 08:34 AM
JeffBowlsby   Prob with that Clay is that the 70-74 FP wire is o...   Nov 25 2024, 09:33 AM
ClayPerrine   Prob with that Clay is that the 70-74 FP wire is ...   Nov 26 2024, 07:30 AM
Literati914   If you pull the fuel pump wire back and reroute i...   Nov 25 2024, 04:29 PM
dtmehall   This thread started when captjm said that he wante...   Nov 25 2024, 05:50 PM
JeffBowlsby   That's excellent Clay. Better safe than sorry...   Nov 26 2024, 10:47 AM
Literati914   .. The fuse for the FP circuit is the big 25A fus...   Nov 26 2024, 11:23 AM
JeffBowlsby   The 25A fuse is the main fuse for the entire car, ...   Nov 26 2024, 11:24 AM
Literati914   The 25A fuse is the main fuse for the entire car,...   Nov 26 2024, 11:29 AM


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