Matt,

If you have an ohm meter or a continuity checker, you can determine which 
wire is which.  Attach one lead of the meter to the case of the radio, being 
sure it's clipped to something metal.  Connect the other lead to one of the 
wires.  If you get a reading of 0, you're connected to the negative lead. 
If you get a high reading, you're connected to the plus lead.  If you're 
using a continuity checker, it will buzz when you're connected to ground, 
and remain silent when you've got the plus lead.

Steve

----- Original Message ----- 
From: "matt V" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, January 05, 2009 21:20
Subject: tm-271 wires


> hi all,
> well, I cant ask my sited help this because she wants me to send the =
> radio back claiming i cant afford it; they wont take that as a reason =
> i'm sure; but anyway, i really cant let her know i have it.  anyway, =
> which wire is which, holding the wires so the two ends (bare wire) is =
> pointed away from me.  Is there a way that i could tell on my own =
> without taking the chance of blowing up a brand new radio?
> thanks
>