CDM1250

[W3AWF]

I recently completed an install of a CDM1250 in a truck for a customer of mine. I am not in favor of wiring ignition sense due to the possibility of the ignition sense board having issues, so I wired an external relay with the relay activated from the stereo fuse. The issue I am having is that when the truck is started the radio will not automatically turn back on, causing the user to have to manually turn the radio on. What do I have to do in order to make the radio come on immediately upon power being applied?

 

[clbsquared]

Unfortunately, You'll need to install the ignition sense cable.

Sent from my HTC One A9 using Tapatalk

 

[TonyS]

Yep. You'll need to manually power the radio on every time if ig/sense is not hooked up and enabled in CPS.

 

[N4KVE]

When I wired my radios in the car, I used the 5 pin relay for the radio, but still used the ign sens wire, so when the car starts, the radios come on. I also used a 8 second delay device so the radio can not come on while the engine is cranking. Works GREAT. Of course since the base radios are on 24/7, I did not use ign sense for them.

 

[SteveC0625]

I recently completed an install of a CDM1250 in a truck for a customer of mine. I am not in favor of wiring ignition sense due to the possibility of the ignition sense board having issues, so I wired an external relay with the relay activated from the stereo fuse. The issue I am having is that when the truck is started the radio will not automatically turn back on, causing the user to have to manually turn the radio on. What do I have to do in order to make the radio come on immediately upon power being applied?

Ignition Sense is the best way. I won't use any of the jumper tricks. They are prone to causing more problems than they solve because folks won't verify which pins they are jumpering before making the connection.

There's plenty of info already on here and elsewhere. Search cdm1250 ignition jumper The question you have asked has been answered many times over.

Always program the radio for Ignition Sense AND On/Off. It saves mucho heartache later on.

Search tags: The Professional or Waris
Series of radios includes:

HT750 HT1250 HT1550
EX500 EX600 EX560 EX650 PR860
CDM750 CDM1250 CDM1550
HT1250LS+ CDM1550LS+ CDM1550LS

It may be helpful to search using wildcards.
If someone asks a question about one model,
the answer usually pertains to most, if not all.
They are all programmed with HVN9025 CPS.
The last version of the CPS released before the
product line was discontinued is R06.12.09.

 

[TonyS]

If a radio will self power on without using ig/sense then possibly the best way to go is Havis Chargeguard. But that won't work in this case.

 

[cmdrwill]

The radio needs constant battery power other wise it forgets the last channel and scan settings.

So the IGN sense IS the way to go.

 

[joemoor]

I did the 7/9 pin short on my CDM1250 that I keep in a go box and use for field work (See this link http://forums.radioreference.com/motorola-forum/113574-cdm1250-ignition-sense-bypass.html#post853508)

I don't recall nor have I experienced, the need for a constant power source to keep programming. YMMV however.

73
Joe