Midland 248XL

General CB Radio Advice and Troubleshooting

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foz
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Mon Oct 26, 2015 4:23 pm

Anyone have or point me in right direction to get a wiring diagram for the mic?

searching all over (tried the likes of http://www.servicedocs.com/ etc and a lot of googling)

tried looking for midland website but only USA one comes up

anyone any ideas?

thanks in advance


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foz
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Tue Oct 27, 2015 8:57 am

thanks dragonfly, do you have anything with the colours on? or are they all different?

seems to have two black wires, one which I'm told might not be black underneath. two wires have come away from the soldering, looks as though the wire tensioner near the plug hasn't been doing its job

Dragonfly
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Tue Oct 27, 2015 10:35 am

what color wires do you have in your mic .

I only have a Midland 78 plus and its wired
1 green
2 yellow
3 red
4 black
5 braid
6 unused

To make the cable clamp a tight fit i usually snip a small piece off a zip tie and slide it in alongside the cable then
tighten the clamp onto both .

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foz
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Tue Oct 27, 2015 2:42 pm

1)yellow
2)blue
3&4 come undone and red and another black wire are loose
5)black
6)white

i was thinking of that or similar, cable insulation or similar. odd that the factory fit doesnt do a sufficient job. it doesnt help that the coiled cable isnt long enough, its mounted the back of cubby box in my 90 and even to drivers seat it struggles. i have pulled the coil a few times holding the other end to avoid it pulling at the plug, but it always recoils to that short distance after a while, depends how hot/cold weather is(as strange as that sounds)

Dragonfly
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Tue Oct 27, 2015 6:02 pm

pin 5 should be the outer braid shielding so black dose not make sence to me .

Pin 4 and pin 6 will likely be channel change .

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foz
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Wed Oct 28, 2015 9:30 am

i was told one of the "blacks" were a different colour under the sheathing, haven't stripped them yet.

pics aren't that great but here goes:

Image

Image

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stampman
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Wed Oct 28, 2015 11:39 am

1= audio

2= recive

3 = tx

4= up

5= shield

6= down



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if it anit broke dont fix it

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foz
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Wed Oct 28, 2015 2:10 pm

hi stampman,

im not sure what they are, there is a black and a red come loose from the pins and dont know which pin to re solder which one to

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stampman
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Thu Oct 29, 2015 9:55 am

red to 3 and pure black to 4


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foz
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Thu Oct 29, 2015 3:55 pm

much obliged :D

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foz
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Mon Dec 21, 2015 1:41 pm

fiddlier than it looks, anyone recommend someone good at soldering :lol:

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