+ve earth UHF fitting?

[Sam]

I am looking to fit a UHF radio to a series IIa landrover with positive earth.

Are ther any tricks to include it in the wiring loom (ie. so the radio comes on and off with the ignition key) or should I just connect it directly to the battery.

Any advice is welcome.

Sam

[bigbugga]

Originally posted by Sam
I am looking to fit a UHF radio to a series IIa landrover with positive earth.

Are ther any tricks to include it in the wiring loom (ie. so the radio comes on and off with the ignition key) or should I just connect it directly to the battery.

Any advice is welcome.

Sam

I dont know about the positive earth, but I wired mine straight to the battery.
This way I can leave the door open and still hear it when stopped somewhere, if the keys are in the ignition Disco's screem as soon as you open the door.

Very anoying.

Have left it running a couple of times at home all night and never had any problems with battery drain.
Draws very little currant.

[Antaine]

Originally posted by Sam
I am looking to fit a UHF radio to a series IIa landrover with positive earth.

Are ther any tricks to include it in the wiring loom (ie. so the radio comes on and off with the ignition key) or should I just connect it directly to the battery.

Any advice is welcome.

Sam

Sam, this "109 project", is it a GS or FFT? Give us some details. [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]

As for your question, the S2A doesn't have any accessories anyway (not from factory) so wiring straight to the battery should prove no challenge for the system to support.

Now, if it is a FFT (Fitted For Transciever) and you have the original wiring loom for the radios, you could utelise that. Keep in mind that if you've fluked the radio generator being wired in (top left side of motor/engine bay) , you'll need to step the power down from 24V to 12V.

Hope this helps....and if you've not visited yet, go to the bottom of the forum subjects and visit the REMLR (registry of ex military land-rovers) and introduce yourself and your baby. :wink:

Cheers,

[crawfy]

Hi Sam I have fitted mine straight to the Battery, I found it easier to do so!!! Unlike the disco which screams everytime you leave it unattended!!!!!!!!!!! Hence the reason I bought a Handheld unit for the Disco!!!!!!!!!!!!!!!!!!!!!!! [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]
regards
Crawfy
S11A88 & 97 300 TDI DISCO

[Bushie]

Could be barking up the wrong tree but I'm not sure if this could be done.

The radio will be polarity sensitive (I imagine) whilst this will not be a problem at the radio end as it can all be mounted above ground, but the aerial will be expecting to see a -ve at its earth point back through the co-ax to the radio chassis.

As I said I'm not sure but it may be worth checking out.



Bushie

[Antaine]

Originally posted by Bushie
Could be barking up the wrong tree but I'm not sure if this could be done.

The radio will be polarity sensitive (I imagine) whilst this will not be a problem at the radio end as it can all be mounted above ground, but the aerial will be expecting to see a -ve at its earth point back through the co-ax to the radio chassis.

As I said I'm not sure but it may be worth checking out.



Bushie

Good point Bushie, but if it's an FFT it's fairly easy to get around. Mount the Antenna off the Side Antenna mount after insulating the mount from the body (rubber bushes...bit fidlly but overly so) then run a earth wire from the mount back to the battery.

Originally, I think you'll find that the Army Antenna mounts were insulated from the mount anyway and earthed to the radio body. The radio's were then earthed seperately with a earth peg.......I may be mistaken on this and Phil (TankRadio) could set me straight.

Not an FFT? Then same procedure for wherever the Antenna mount was planned for.

[p38arover]

Do not connect the CB radio in any way to the battery and the chassis unless you want to stuff the radio.

Your best bet is to convert the IIA to negative ground. If it has a generator, this is dead easy and I can email you an article on how to do it. However, if you have an original positive earth car radio fitted, you'll have to replace that with a negative earth unit (or check to see if it has a pos/neg earth switch on it. Some early radios did. If you want the article, contact me off list.

Ron