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2010 Challenger 6M- Brilliant Black, 426 stroker, Hellcat rear cradle, ZF 3.90 diff, DSS 1 piece
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Discussion Starter · #1 ·
So for the 2nd time now the wires at the crimp connector going to my fore fuel pump have corroded to the point of failure due to electrolysis between the aluminum crimp and the copper wiring.
I am hoping these heat shrink solder connectors will resolve this issue.
The temp fix was to fill the replacement connector with dielectric grease until the tubes arrive.

Luckily the failure occurred in the driveway, but I do have a length of wire stashed in the spare wheel area. If needed I can rig a temp jumper from the battery to the pump to get home.
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Sounds like you are using the wrong terminal ends. They have ones that are made to make the transition from copper to aluminum. Or you could just use a copper terminal.
 

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I wire cars for a living and have never seen any corrosion in a crimp connector that wasnt exposed to liquids. How much power are you running through those connectors? They look melted.
 
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Discussion Starter · #4 ·
Sounds like you are using the wrong terminal ends. They have ones that are made to make the transition from copper to aluminum. Or you could just use a copper terminal.
Agreed... live and learn.

I wire cars for a living and have never seen that. How much power are you running through those connectors? They look melted.
Not that much, it's a 450 lph walbro pump. The heat was caused by the corrosion deteriorating the connection.
 

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A Walbro can pull upwards of 20A. I would avoid crimp connectors on anything that pulls that much. I’ve never used those heat shrink solder things. I would say solder the wires and cover the connection with heat shrink and you wont have this issue anymore. Just my 2 cents...
 

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Discussion Starter · #6 ·
It's fed by a 20a fusible link, so worse case scenario would be a popped fuse if it grounds out.
And I'm thinking these should fit the bill.
 

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The proper term is galvanic corrosion also known as bimetallic corrosion.
 

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...Google. :geek:
Nope, learned it from having daily coffee with a plumber and helping when needed for years.
How about capillary action/attraction when sweating pipes?
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