Soldering 4MM Plugs

[BrianG]

It sounds like you aren't getting the connector hot enough to melt the solder that is inside the little socket (where the wire would sit). Once all the solder is in liquid form, the wire should slide right in.

[HotnCold]

Another thing you could try is to ( with a dremel ) cut a "V" slot in the plug - tin the wire - tin the plug and then while heating up the plug - slide the wire into the plug - the heat from a good soldering iron should be no problem - thats the way Monster Mike and I have done these plugs in the past - good luck...

[skellyo]

Originally Posted by BrianG

It sounds like you aren't getting the connector hot enough to melt the solder that is inside the little socket (where the wire would sit). Once all the solder is in liquid form, the wire should slide right in.

Yep, I agree.

The other thing is to make sure that once the wire is inserted into the hot solder in the connector, hold the iron on it long enough to wick the solder onto the wire.