Uniden Pro 520XL talkback

[Hardhead]

Can anyone tell me where to put the resistor to get talkback in my 520XL? I run it on my bike and I need to be able to hear myself in my helmet headsets.

 

[Switch Kit]

if it has a EX.Speaker and PA plugs ? usually you can just put a 68 ohm resistor from ground to ground on those on the bottom side of the board , if it doesn't you can try the speaker ground to ground on the radio using the same 68er , there are a few other ways but IM not up on that radio. Good luck to you,

 

[Hardhead]

Thanks,
Switch Kit.
I'll try that.