I have mounted antenna on nudge bar on GME bracket and Antenna fire goes inside the cab and behind the UHF itself.
Since my TX3100 is plug and play I have put the cigratte lighter socket in cigarette lighter.
No I did try and put on channel 40 and channel 3 but did not hear a word.
One of the friends mentioned you have two earth one is on nudge bar because on antenna and other in cigarette lighter that could be the reason.
Now im confused I did not separate red and black wire since I thought this unit is made to just go in cigarette lighter hence its easy.
Funny thing last night I tried to unscrew the antenna plug and because my hand was touching it and it was on channel 3 I could hear random people on but then it went quite again.
now If this is plug n play how does that earth thing work additionally one of my friend mentioned I might have to run a red wire to battery from cab ?
this is the exact unit have below with that cigarette lighter plughttps://www.google.com.au/search?q=tx+3 ... w0fWFAM%3A