MBEC help -- back plug

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mattbta

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I'm trying to put in footwell lights in my 04. I found this post from 2014 that shows a pin location on the back of the MBEC. https://www.gmfullsize.com/threads/installing-footwell-lights-in-03.104799/post-5720705

I've removed all the plugs on the front and rotated it around, but can not figure out for the life of me how to "slide the blue TPA from the plug" to allow my pin to slide in. That screw in the middle comes loose a little bit, but won't fully remove or I don't know how. It appears the TPA is blocked by the black outer shell around the white plug.

vppNUZw.jpg

Any ideas? I'd rather not give up on this approach because it's clean and from the factory.

Thanks,
-Matt
 

drakon543

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im sorry doing what you want this method seems like a giant waste of time messing with harnesses that should be left well enough alone. there are clean and entirely unnoticeable methods of doing what you want that aren't cheesy wire taps. just get the wire your after split it slide a piece of high quality self sealing heat shrink over the wires. solder them back together for a permanent bond and apply self sealing heat shrink. tuck wire back into wire loom and your done. nobody is going to climb up into the dash to find a single pin looking for a wire. heat shrinked tucked back into the wire loom and nobody is the wiser. if your going for factory look your going to have to mess with the wire loom anyway.

anyway far as im aware the white plug has to come out to remove the blue stopper. that plug is never meant to be removed ones its bolted together so its probably got some kind of retainer or compound keeping you from removing the bolt. however the threads are molded into the plastic so if the bolt wont come out easily i wouldn't force it. you will separate the threaded insert from the plastic and be *****. if you manage to get the wire installed extreme caution putting that back in. those male prongs are extremely flimsy and will bend easily. you will get one oops out of them, once bent and straightened if you bend it again it will break if you try to fix it a second time.
 
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mattbta

mattbta

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Yeah, I don't want my truck to be *****. Decided to go another way...just didn't feel comfortable with another attempt trying to get the white plug out. Thanks.
 

drakon543

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I never heard of this stuff have a link?

Here is another option for tapping interior wires, I used these to tap into my speaker wires for a sub amp.

https://www.amazon.com/gp/product/B019BLZWQ0/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
if it links correctly
https://www.3m.com/3M/en_US/company...7+8730567+8743879+3291756777+3294857497&rt=r3
several companies make a version of the same thing. like a heat activated adhesive so when you shrink it the adhesive activates seals and bonds to the wires.
 

89Suburban

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drakon543

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No shit? So you can slice this thing open, slip it over a wire, and shrink it down and it will seal all the way around?
id still solder the wires or buy the splice kit that uses that style heat shrink. i use the larger splice kit for doing quick 480 3ph wire repair at work. few times i had to undo my splice for whatever reason and thought id save the actual splice. the splice kits use a metal sleeve with set screws to crimp down on the wire. the few times ive done it ive only managed to save 1 or 2 as the adhesive actually gets into everything. the set screws were even locked solid. let alone trying to separate it from the wire.... seriously not worth the effort. i just hack them out and toss them anymore. either way just make sure you use the appropriate size so it tightens around the wire correctly.
 

Rocket Man

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No shit? So you can slice this thing open, slip it over a wire, and shrink it down and it will seal all the way around?
No, you can’t slice it open, you have to slide it over the wire from the end. So cut the wire, slide it down past where you’re splicing, solder your wires and then slide it over the splice and heat it. It’s just regular heat shrink tube with glue inside.
 

89Suburban

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id still solder the wires or buy the splice kit that uses that style heat shrink. i use the larger splice kit for doing quick 480 3ph wire repair at work. few times i had to undo my splice for whatever reason and thought id save the actual splice. the splice kits use a metal sleeve with set screws to crimp down on the wire. the few times ive done it ive only managed to save 1 or 2 as the adhesive actually gets into everything. the set screws were even locked solid. let alone trying to separate it from the wire.... seriously not worth the effort. i just hack them out and toss them anymore. either way just make sure you use the appropriate size so it tightens around the wire correctly.

No, you can’t slice it open, you have to slide it over the wire from the end. So cut the wire, slide it down past where you’re splicing, solder your wires and then slide it over the splice and heat it. It’s just regular heat shrink tube with glue inside.

Okay sorry, I misunderstood what I was reading here. :oops:
 

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