Questions about KWA 2GX gearbox

[Vamp]

I rencently had to do some work on my new KWA KM4 and I need to replace the upper half of the wiring harness. I was thinking about replaceing the entire thing with low resistance wiring. My question and big problem is that I am unsure what wiring harness to get because the gearbox is only described as KWA's 2GX gearbox. So my question is do I need low res wiring for a version 2 or version 3 gearbox?

[Nec]

KWA M4s use a version 2 gearbox.

You also need to know if the gun is front wired (PEQ or handguard) or back wired (full stock, buffer tube, or crane stock).

[Vamp]

Thank you I knew it was wired to the front just not if it was v2 or v3. Does anyone know what low res wiring harness (that is wired to the front) is thebest and where to get it.

[Nec]

Thank you I knew it was wired to the front just not if it was v2 or v3. Does anyone know what low res wiring harness (that is wired to the front) is thebest and where to get it.

I do a lot of rewiring of AEGs, I have to say buying wire in bulk rather than buying single wire harnesses is much cheaper in the end if you wire more than a few guns. If you're looking for low resistance wire be on the lookout for PTFE (Teflon) silver plated copper wire, it's the stuff I use and have had great results with.

My preferred site is McMaster Carr, item # 7304K208 for red and # 7304K341 for black. Along with the wire you will need to buy and install motor connectors, something the premade wire harnesses already have installed, their Item # is 69525K59 they’re also available in 100 packs for just a few dollars more.
A cheaper site I recently found is Bulkwire.com, although I haven't ordered from them yet, their wire is much cheaper per foot in price than McMaster Carr.

If you’re not looking for low resistance wire and just looking to replace the stock wiring, I recommend silicone copper wire as it’s much more flexible than the PTFE silver plated wire. I buy silicone wire from Hobbyking.com a long with my Lipos, XT60 connectors and Deans connectors.

[Vamp]

Thanks Nec, with any luck this will be the last wiring job I will have to do for a while

[Nec]

Thanks Nec, with any luck this will be the last wiring job I will have to do for a while

If you didn't live so far away I would be glad to give you some wire.

[Vamp]

Got my wiring harness from ups now I face a new problem. I got the majority of the gun broken down, main body pins are out, stock is off, upper reciever is off. motor is out but now the three pins in the lower reciever are giving me trouble. I am hitting them with a screwdriver and hammer and they are not budging, am I just being to light with them (which I doubt, I hit them pretty hard) or is there some trick to getting them out.

[Nec]

Pics?

[Falcon7]

Pins are stupid and cause problems and I hate them. Pretty sure you have to knock em out in the right direction or else it won't work. Hammer and a nail works really well.

[Vamp]

No camera sorry man but if you can imagine. Your stripping the gun down to the gear box. Take out the two main body pins and remove the upper reciever. Done. Then you remove the stock and buffer tube. Done. Then remove the bottom of the pistol grip, unplug and remove the motor. Done. Then remove the two screws inside the pistol grip and remove the rest of the pistol grip. Done. Now remove the magazine catch by taking out the screw on the button and and slide the catch and spring out. Done. Now you should be down to just the lower reciever with the gearbox inside. There are three smaller pins that run through both the body and gearbox to hold it in place. One is located right above the saftey another is just to the left of the saftey and the third is just slightly above and to the right of the magazine catch. I hit them pretty hard with a hammer and a small screw driver and they didn't even budge.

[Vamp]

Aaarrrrgh! problem after problem..... Ok so here is the update only one of those three pins was real the other two were very convinceing fakes. You do have to hit that pin from one particular side though. Anyways I finally got that gearbox rewired only to find that my problem still hasn't been solved so now if anyone has any ideas I could use the help. So here is a recap of what I have done.

1) I cut the wires behind the connecters to wire out the fuse on my KWA KM4 and now I cannot get power from the battery to the motor.

2) I took the motor out of the KWA and tested it using another gun the motor still spins fine so I reinstalled the motor.

3) I disassembled the gearbox and rewired the entire thing switch and all, installing a deans plug where the fuse connecters were. Still no power.

Now what else could it be? I am going to try the only other two things I can think of. 1st I am going to solder the wiring directly to the motor and then if that doesn't work I am going to try reconnecting the original fuse and ground wiring. I was wondering if anyone can give me any other clues as to what it might be.

[Nec]

Maybe I missed it but what are you having trouble with again? I've read this thread but didn't see anything new.

[CommieHunter]

It's probably something much more subtle than just 'wires'. If the wires aren't obviously cut or crimped somewhere, it's probably not a wire issue.

More likely, it's the selector plate or something in the trigger and trigger switch mechanism. It could be a fitment issue or something else.

It could also be a bad battery, or a bad connector on the end of the wiring or the battery.

[Vamp]

Sorry nec it is still the same issue rewiring had no effect on the problem unfortunatly. I changed out the deans plug too and the problem remains. commie hunter do you have any idea for sure what I should be looking for if it is a trigger switch (which I doubt just installed brand new G&G low res) or a selector plate issue. The only reason I doubt either of these issues is because the gun was working fine when I used it at rez 3 the only thing that I did to it was I tried to cut the wires behind the fuse to install a deans plug.