What type of radio are you running? CB or Amature radio? How much RF output power? You want to run the big (best) coax possible (RG8). Do not run it near any computers or electronics. Make absolutly sure that you ground the antenna to the body at the base of the antenna (yes, drill hole in your baby). Check the SWR's across the band at minimum power and verify it is less than 2. 0 to 1. the lower the better(1. 0 to 1)

. Wire the power using BOTH Negative and Positive direct from the battery, but fused. You may also have to use an power line filter to filter out the altenator noise. Use the largest copper cable possible. If running ~20A use 4-6 ga wire. Voltage drop in a 12vdc system greatly affect the power output. A 1 volt drop can reduce you power output by half.
Gradually increase you power to maximum, after verifying that the SWR is less than 2. 0 to 1at full power, make sure you electronics do not start acting funny.

If all is ok at max RF power then you are ok. If not correct it and try again. You do not want to key up and kill you computer will running down the road. I believe Dodge truck are rated for 100 watts RF power, but don't quote me on that. Prime example is toyota camery, if you key more than 5 watts RF power, Poof goes the computer at $1500 a pop

and it is owner responsibility. :--)
Just remember to check all connections regularly, Solder all connections.
Send me a PM if you have any more question.
