M2 CB Grounding

[roadman]

i have a 05 frieghtliner m2106 and i cant get my swr down, got new coax and firestick, im thinking its a grounding issus, do i need a NGP setup to get my cobra 29 LTD ST to work right? magnets dont stick to the truck dew to it having a alloy or some say its a fiberglass shell. tried lots of different options but nothing seems to work. also have alternator noise transmitting. anybody got any ideas? thanx.

 

[Dakota]

the m2 body is aluminum, where are you grounding the cb? you might need to use fuse block
i am in no way an expert in auto/truck wiring so don't take my word for it

 

[roadman]

im using the original mirror mounts on the truck, they have ground wires running to them. anyway the cb is grounded on a bare bolt attached to the firewall.

 

[apollopaul]

My truck has fiberglass doors so the mirror brackets are not grounded. I had same problem, I went to no ground plane ant. from firestik. It works great

 

[roadman]

thats what im thinking ive got to do as well

 

[highway star]

My antenna is grounded through the mirror mount. One of the bolts was replaced with a stud to mount the antenna on. It's still not a perfect match, but it's in the acceptable range. The skin on the door is fiberglass, but the frame isn't.

 

[roadman]

yeah, thats how ive got it setup now. hmmm, is there something im missing? any ideas on the alternator noise being trasmitted?

 

[Dakota]

I dunno, check with radio shack they should have some type of noise eliminator for automotive radios, that might work

 

[bluejaybee]

My truck has the extra ground running to the mirror mounts also. But on the driver side, it had a corroded connector on the end and was not giving me a good ground. A new connector and cleaning, fixed that.

My CB picks up everything electrical in the truck. Alternator, wipers, fan motor, 4 way flashers, everything. Not real bad, but it is there. Drives me crazy and I have not really tried to fix it.