Audio for a 24v diesel

TCash · Jun 24, 2019

I have a 24v 1pz and I want to upgrade the head unit but not instal an amplifier or extra speakers. I was under the impression I needed a 24-12 DC-DC converter. I pulled my OEM headunit out and it had a 12v sticker on it and I read out the connector and had two pins read ~14v.

So, am I misunderstanding this and the rig will accept a 12v headunit just fine or should I find a 24v marine unit to be safe? I do not have the FSM and I am having no luck finding wire diagrams for the rig. Any input you guys have is appreciated.

jblueridge · Jun 24, 2019

All the newer stereos I have installed for myself and family get their main power through an unswitched, always-on "memory" wire. The red power wire merely provides power to the on-off switch of the unit. If that 12V wire you located does not depend on ignition switch it will be easier.

umpqua · Jun 24, 2019

I want to know this too. Thanks for posting.

portcruiser · Jun 25, 2019

Hi Tcash

If that is the original radio that was installed in your 1PZ , it means that you also have an 24-12 converter installed , perhaps an original one . Modern radios , don't work very well with these converters . I strongly advise you to choose a 24 volt radio . I did that and it works perfectly , connected only to the ACC fuse on the fusebox . The best ones I know are from Kienzle , VDO and Continental . Made in Germany , and build for use in trucks . Bluetooth , handsfree telephone , etc. ! Kienzle models have very classy looks and all of them are very user friendly to operate . And they are not too expensive . I have this one in my HJ61

https://www.kienzle.de/uploads/media/MCR2416BTK.pdf .

Visit this page ( Germany ) and you will see various models from Kienzle , Continental & VDO

Kienzle Automotive GmbH: Audio

www.kienzle.de

Cheers from Portugal !

portcruiser · Jun 25, 2019

And this one is , perhaps , the best shop in Europe to buy these and lots of other 24 volt radios

Autoradio

www.schlauer-shop24.de

They sell on eBay.de , too

Very efficient and professional seller .

coldtaco · Jun 25, 2019

also heavy equipment have 24V radios.

SKULLYOTA · Jun 25, 2019

I have an aftermarket cheapo Dual brand head unit in my 24V rig, wired to the factory plug and what ever factory 24v-12v converter is there. works just fine. :meh:

Why go thru the extra hassle to wire a separate 24V feed to the new stereo? if a 12V head unit was already there just plug a new one in and go.

Eco 45 · Jun 26, 2019

CAT makes a really good converter that offers both constant 12V and intermittent 12V from the same device. Been using them for several years now without issue.

JMasi · Jun 26, 2019

How do you wire it and what type of plugs do you use?

Eco 45 · Jun 26, 2019

JMasi said:
How do you wire it and what type of plugs do you use?

My local CAT shop would make me a pigtail with the correct plug for the converter and foot long leads coming from it. That way I could wire up any accessories I wanted and how I wanted.

TCash · Jun 26, 2019

SKULLYOTA said:
I have an aftermarket cheapo Dual brand head unit in my 24V rig, wired to the factory plug and what ever factory 24v-12v converter is there. works just fine.

Why go thru the extra hassle to wire a separate 24V feed to the new stereo? if a 12V head unit was already there just plug a new one in and go.

Was trying to see if anyone else had success by using a regular 12v unit... I am trying not to modify or add to something that doesn't need it.

TCash · Jun 26, 2019

portcruiser said:
Hi Tcash

If that is the original radio that was installed in your 1PZ , it means that you also have an 24-12 converter installed , perhaps an original one . Modern radios , don't work very well with these converters . I strongly advise you to choose a 24 volt radio . I did that and it works perfectly , connected only to the ACC fuse on the fusebox . The best ones I know are from Kienzle , VDO and Continental . Made in Germany , and build for use in trucks . Bluetooth , handsfree telephone , etc. ! Kienzle models have very classy looks and all of them are very user friendly to operate . And they are not too expensive . I have this one in my HJ61

https://www.kienzle.de/uploads/media/MCR2416BTK.pdf .

Visit this page ( Germany ) and you will see various models from Kienzle , Continental & VDO

Kienzle Automotive GmbH: Audio

www.kienzle.de

Cheers from Portugal !

Thank you! I was figuring going with a 24v radio would eliminate concerns. Just seeing what others have done. Thanks for your response! How are the rigs in Portugal? Are they set up for more desert/dryland conditions?

SKULLYOTA · Jun 26, 2019

Eco 45 said:
CAT makes a really good converter that offers both constant 12V and intermittent 12V from the same device. Been using them for several years now without issue.

View attachment 2013391

How many amps does that handle?

portcruiser · Jun 27, 2019

TCash said:
Thank you! I was figuring going with a 24v radio would eliminate concerns. Just seeing what others have done. Thanks for your response! How are the rigs in Portugal? Are they set up for more desert/dryland conditions?

Hi Tcash

These 24volts radios are very practical , very simple to install , very sturdy and user friendly on daily use . I have one of them installed in my HJ61 wich is 24 volts , and soon will install another on the 1999 HZJ75 I recently acquired . Rigs in Portugal usually have a very simple setup due to very rigid ( read stupid ) traffic regulations . Every minor alteration must be homologated by the traffic authority , by a lengthy and expensive proceeding . Even so , there is a good number of rigs setup for desert travel . When we can , we go to Morocco , Mauritania , Senegal , Guinea Bissau to have fun ! Nowadays , it is too dangerous to go to Mali , Niger or Libya , like we used to . It seems that Algeria is slowly getting more safe and we are receiving good feedback from some local friends there . Offroad in Portugal is still allowed in most parts of Portugal but it does not requires important modification on our rigs . They are already very capable as they come from the factory . Good luck with your PZ7# !

JMasi · Jun 27, 2019

SKULLYOTA said:
How many amps does that handle?

15 amps continuous and 20 amps intermittent. Cat electronics are usually bullet proof but that comes with a price...

77cruiser77 · Jun 27, 2019

You have a factory converter for your stereo located behind the glove box. I removed the stock unit and replaced it with something more modern with Bluetooth and USB hook ups. Been running it for years and never skips a beat.

SKULLYOTA · Jun 27, 2019

JMasi said:
15 amps continuous and 20 amps intermittent. Cat electronics are usually bullet proof but that comes with a price...

15amps? thats not much.

cruiserdan · Jun 28, 2019

What, exactly, is this vehicle? All we have to work with is an engine and 24 volts. It is difficult to provide definitive recommendations without the whole story.

TCash · Jun 28, 2019

cruiserdan said:
What, exactly, is this vehicle? All we have to work with is an engine and 24 volts. It is difficult to provide definitive recommendations without the whole story.

1991 70lx