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  #1  
Old 03-11-2013, 11:48 PM
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What should I smear on electrical connections ?

Hello All,
so I'm working on the 1998 Chrysler minivan - and its giving me fits like bad grounds or power connections.

So I have some engine bay parts apart - I found dedicated grounding studs (one on the engine, one on the fender) and some other various electrical bits that want cleaned.

I can wire brush them no sweat, but after that - is there something I can put on the threads/washers/metal parts that would either help its electrical connection, keep things clean inside or just make me feel better that I tried to clean up the grounds ?

I have a small assortment of chemicals in my garage, including any number of petroleum distillates (motor oil, xmsn oil, fork oil, 2-stroke oil, WD40...) Silver Anti-seize, copper RTV gasket maker, powdered graphite lubricant, wheel bearing grease, brake pad anti squeal, a few different types of greases, water, simple green, brake cleaner, B12chemtool carb dip (!).

I've heard of dedicated dielectric grease, but:
a) I dont want a dieelectric, I want it to conduct
b) I dont have any of that on hand anyway.


Any thoughts on what to smear on electrical connections ? (including fuse blades)

-John

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  #2  
Old 03-11-2013, 11:53 PM
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Either Vaseline or silicone dielectric grease -- it will be wiped away where the metal parts touch, so it will still conduct.
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  #3  
Old 03-12-2013, 12:56 AM
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Quote:
Originally Posted by Angel View Post
Hello All,
so I'm working on the 1998 Chrysler minivan - and its giving me fits like bad grounds or power connections.

So I have some engine bay parts apart - I found dedicated grounding studs (one on the engine, one on the fender) and some other various electrical bits that want cleaned.

I can wire brush them no sweat, but after that - is there something I can put on the threads/washers/metal parts that would either help its electrical connection, keep things clean inside or just make me feel better that I tried to clean up the grounds ?

I have a small assortment of chemicals in my garage, including any number of petroleum distillates (motor oil, xmsn oil, fork oil, 2-stroke oil, WD40...) Silver Anti-seize, copper RTV gasket maker, powdered graphite lubricant, wheel bearing grease, brake pad anti squeal, a few different types of greases, water, simple green, brake cleaner, B12chemtool carb dip (!).

I've heard of dedicated dielectric grease, but:
a) I dont want a dieelectric, I want it to conduct
b) I dont have any of that on hand anyway.


Any thoughts on what to smear on electrical connections ? (including fuse blades)

-John
best thing would be a clean dry connection. you can add dieelectric grease after assembly, but do not put it between connections. ie battery connections, ring lugs on studs ect
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Old 03-12-2013, 07:42 AM
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I've used silicone based grease in the past...water proof and wont corrode.
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  #5  
Old 03-12-2013, 08:44 AM
Inna-propriate-da-vida
 
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Dielectric grease.
As long as you have clean metal, the grease will not inhibit the connection, but will seal it from outside intrusion, corrosion and potential wet condition arcing.

I like the Motorcraft version, but pretty sure they are all about the same.
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  #6  
Old 03-12-2013, 08:59 AM
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there is a type of grease that electricians use on copper/aluminum connections to prevent corrosion between the 2.can get at any place that has a good electrical section.
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  #7  
Old 03-12-2013, 10:30 AM
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Location: Baltimore, MD
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Dielectric sticks like no other, but I use regular pump grease on my battery connections, etc.
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Old 03-12-2013, 01:11 PM
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You want to deny oxygen and moisture.Most conection terminations are treated for corrosion resistance with a plating. Once you clean one that has evidence of corrosion it is reasonable to assume that protective layer may be gone.

I just normally use thick bearing grease throughout the assembly of electrical terminations. . That way there is not much likelyhood of having to revisit those connections in the future. A silicone grease on connections where there is plastic involved as I would not want to take a chance of the normal grease causing issued with the plastic plugs etc. This all becomes a habit to do with time. Mechanical connections are usually the weakest point in any electical circuit.
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Old 03-12-2013, 01:34 PM
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Would it be good to grease the battery connections?
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  #10  
Old 03-12-2013, 02:06 PM
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Quote:
Originally Posted by Jorn View Post
Would it be good to grease the battery connections?
I've greased every battery connection on every vehicle I've owned. The result- no electrical issues other than batteries/alternators dying of old age.
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  #11  
Old 03-13-2013, 12:38 AM
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We used to put a few copper pennies on top of our car batteries as well. either the cells venting a little coated the top of the battery with an acidic condition or whatever. The pennies turned green over time. We assumed they were neutralising at least some acid.

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