Thread: Uniden uh015sx in disco 1

I always wire 2 way radios direct to the battery, Dont know if its right or wrong but the way I figure it is there is less chance for interference from other electrical systems.
also welcome to the forum
cheers
blaze

Welcome to AULRO

If you have one battery and want the radio to only come on when the other accessories are switched on your best bet is to wire it in with a relay.

10A fused wire from the battery to pole #30 for power.
Ground on pole #85
Activation wire from your accessories on pole #86
And feed power to the unit on pole #87

Even better is to come off a second battery and just run a 10A fused line straight off it, since it doesn't matter if you accidentally leave it switched on.

thats pretty much what i have been thinking,

Thank for the replies and advice,

Steve

If you hook a radio direct to a battery you are better of to fit a relay and either hook it to an ignition switch or have a separate switch on the dash somewhere as off isn't off on most new radios an if the vehicle sits around like mine dose as work supplies me a vehicle they will drain you battery. Also don't hook the earth to the battery hook it to a good earth point on the vehicle. If you hook direct to the battery and for some reason you end up with an earthing problem to the battery from you chassis/body current will flow through the negative lead through the radio to your antenna instead of the earth lead. ( The antenna should be earthed as well ) It can also happen if an isolator switch if fitted to the earth lead between the battery and chassis ( this usually destroys the radio and melts the coax )

dont know why people want to complicate an easy sysytem, whats wrong with the on/off switch on the radio. (you should only ever forget to swtch it off once)
cheers
blaze