7 pin connector corroded?

[Maxamillion]

You can spray some WD40 on the contacts. This will help with the corrosion and remove any moisture.

 

[Soundguy]

there is also a porduct you can spray on that leaves a residue to help corrosion, cross conductance and moisture.

deoxit.

 

[oldyellr]

there is also a porduct you can spray on that leaves a residue to help corrosion, cross conductance and moisture.

deoxit.

You do mean combat corrosion or eliminate corrosion, I presume.

Yes, I've heard of Deoxit being recommended for restoring low contact resistance in scientific instruments. I also have an old Volvo (a 1992, not really old for a Volvo) and have seen the product mentioned often in Volvo forums because these cars are kept running a long time after "throw away" cars are in the junk yard.

 

[Car Doc]

My camper does it too I just started putting white grease on it and we will see if it helps or not next year. I leave the end hanging down so water cant get in and that doesn't stop it.

I wonder if the house battery has anything to do with it back feeding the power to the plug? elifino :thumbsup:

 

[Soundguy]

You do mean combat corrosion or eliminate corrosion, I presume.

Yes, I've heard of Deoxit being recommended for restoring low contact resistance in scientific instruments. I also have an old Volvo (a 1992, not really old for a Volvo) and have seen the product mentioned often in Volvo forums because these cars are kept running a long time after "throw away" cars are in the junk yard.

i work in the electronics industry, and yeah.. that stuff is a lifesaver.

and yes.. understood to be help 'prevent' / 'control' corrosion.

soundguy

 

[davkir]

My guess would be that those two circuits see the highest current and a much higher number of "on" and "off" cycles. If the contact pressure between the male and female terminals is not adequate, it would be just like switch contacts arcing. What I would do is thoroughly clean the terminals inside and out with steel wool and spread the male terminals a bit with a knife blade. This will increase the contact pressure. Then, coat the terminals with dielectric grease to make it easier to insert the plug with the spread terminals and also keep out moisture. What someone else said earlier about supporting the connector also makes sense, because that would reduce vibration "fretting" the terminals.

Another factor may be the inrush current. Every time power is applied to the bulb, there is a much higher current flow until the filament heats up and the resistance increases.

 

[bigdad]

My camper does it too I just started putting white grease on it and we will see if it helps or not next year. I leave the end hanging down so water cant get in and that doesn't stop it.

I wonder if the house battery has anything to do with it back feeding the power to the plug? elifino :thumbsup:

Be careful using just any grease or oil. I would stay with a non-Oxidizing grease. Like battery terminal grease. Believe it or not, Vasiline.

 

[Soundguy]

most greases these days.. at least premium ones have corrosion inhibitors.

plain old tub axle grease probably don't.. but many of the #2 tube greases do.. at least the ones I use do.. and I want those corrosion inhibitors.

still.. they fact that the petroleum will 'dewater' the plug.. that in and of itself helps.. no water.. or air, due to the lube coating, then less chance of corrosion.

soundguy