Fuel pump replacement, electrical connections
Thread Starter
Instructor
Joined: Jul 2005
Posts: 228
Likes: 13
Fuel pump replacement, electrical connections
I bought a new Delphi fuel pump to replace the original pump in my early (iron head) '86. The pump electrical connections are different. The original pump has two simple spade connections (one hot, the other grounded to the return tube on the sender/pickup assembly). The new Delphi pump has what looks like a spot for a dedicated two wire plug. Is there some way to adapt this new pump or do I need another pump? Other pumps available on Rockauto appear to have the same connection as the Delphi.
Drifting
Joined: Nov 2018
Posts: 1,752
Likes: 645
From: USA
I bought a new Delphi fuel pump to replace the original pump in my early (iron head) '86. The pump electrical connections are different. The original pump has two simple spade connections (one hot, the other grounded to the return tube on the sender/pickup assembly). The new Delphi pump has what looks like a spot for a dedicated two wire plug. Is there some way to adapt this new pump or do I need another pump? Other pumps available on Rockauto appear to have the same connection as the Delphi.
Thread Starter
Instructor
Joined: Jul 2005
Posts: 228
Likes: 13
Thanks! I read the fine print and it did say no pigtail was included. Filter socks aren't always included either, something that always came with pumps BITD. My local Advance has the sock but I'll have to go searching for the pigtail it seems.
Drifting
Joined: Nov 2018
Posts: 1,787
Likes: 579
From: Mays Landing, NJ
I recently replaced my fuel pump with a Delphi unit and the existing wires connected without issue. I have a LT1 so don't know if your 86 has different wiring than my 95. The new Delphi didn't have a sock but old one was in great shape so just swapped in to new pump. I got my pump from AutoZone.
Thread Starter
Instructor
Joined: Jul 2005
Posts: 228
Likes: 13
From what I'm seeing, later C4s had a two wire plug which mates with the Delphi pump perfectly. Early C4s (possibly '84-'87) used two separate wires with spade connectors. I'm guessing they don't make specific pumps for the early cars anymore. So Delphi sells this pump stating it fits all C4s but does not have the plug pigtail in their catalog. Frustratingly, the ultra cheap Rockauto options have the adapter wiring.
NAPA was the only source I've found so far that sells the pigtail. The local NAPA said they'd have to order it and it would be $26+tax and an addition $10 shipping to get it to the store. I've never heard of ship-to-store costing the customer money. For that price, I'll solder the damn wires to the pump, lol.
NAPA was the only source I've found so far that sells the pigtail. The local NAPA said they'd have to order it and it would be $26+tax and an addition $10 shipping to get it to the store. I've never heard of ship-to-store costing the customer money. For that price, I'll solder the damn wires to the pump, lol.
Melting Slicks
Joined: Mar 2002
Posts: 2,874
Likes: 764
From: Sligo PA
Can you take a picture of the electrical connector on the fuel pump you want to use and post it here? Back when I swapped in my last Walbro pump I ordered an assorted pack of pigtails and socks from Walbro so I knew I would have what I need. Being that I only used the one I needed It's possible I have the pigtail you need collecting dust on a shelf. If I do you can have it.
Team Owner
Joined: Sep 2003
Posts: 25,383
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There are certainly options for a purchase for 15$ or less but you need to look. I believe depending on location it certainly should be 'local'.
My local NAPA would NOT charge for the ship if it were supplied from a NAPA warehouse.
My local NAPA would NOT charge for the ship if it were supplied from a NAPA warehouse.
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Melting Slicks
Joined: Mar 2002
Posts: 2,874
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From: Sligo PA