Wireing UHF to Radio Accessories wiring?

[Babs]

Hello All, Happy New Year.


A little advise please, I need to hook up the UHF radio and want to put it on the ignition accessories my question is - if I tap into the earth and power wires on the radio deck will it give any interference on either the radio deck or the UHF?

Or would I be better tapping into the cigarette lighter wires?

Cheers,

Babs.

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[Homestar]

On both my vehicles, I have just used a multimeter at the fuse box to find an ignition source and used that. Earth can go onto any decent grounded point. I doubt you will have any issues with interference with what you have planned.

Cheers - Gav

[carlschmid2002]

I used the cigarette lighter for my ARB compressor. For my UHF I have it wired live all the time using a Mulgo X Box so I don't need the key in a emergency.

[Basil135]

I would wire it to a permament 12v supply, direct to the battery, via a fuse.

Saves having to switch the ignition on if you need the radio. If you loose your keys, or the ignition stuffs up out the back of no-where, and the UHF is the only means of comms that works, then being able to use it without the key could be paramount.

Even leaving a UHF on for a few days, just receiving, shouldn't drain your battery too much.

[Davo]

There's always been this idea that both positive and negative leads for radios should go straight to the battery to provide "clean" power without any interference, but I don't know if that's still the case with a modern car and a modern radio.

[Babs]

Cheers Guys :)

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[VladTepes]

Could someone be more specific please - how to wire my Icom direct to the battery - where an what size would the fuse need to be?

[Basil135]

There should be a fuse in the power lead, close to the radio. Usually around 5 amp.

I always add another fuse at the battery end, the next size up. So 8 amp. This is to protect the cable to the radio.

You want as sort a distance as possible for this one, to give maximum protection.

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