Jimny Radio with doors unlocked

Hi,

First post and new to Jimnys, so this might have already been answered.

I have replaced my radio with an Xtrons Android head unit and although it is good it takes about 30 seconds to start up once the key is put in the ignition. I would like the radio to switch on when I unlock the car and switch off when I lock the car, so it is booted up when I start the engine.

Q1) Does anyone know if there is a wire which is active (12V) when the car is unlocked?

Q2) The alternative is to use a bistable relay from the door opening/closing remote CL, but this will involve more fiddling.

TIA

Robin

Welcome to the forum. The main issue you will have is the the ecu diverts an nonessential electricity to the starter motor on key turn so it will cut the radio every time you start the car regardless of what you power it from.

Hi Doc,
I recently did a similar job on a Skyline (friend of my son and his crazy car).
The task was to pre-warm the amplifiers much like your radio. I used a 555 switch to trigger a 30 amp relay off the battery, I used the timer wire on the courtesy light for the bistable and the system seemed to work well. I am uncertain of the durability of these switches in a car environment but if it fails there'll be no amps, probably a good thing.
Chris

No eBay APP ID and/or Cert ID defined in Kunena configurationThanks for the replies.

I have found a bistable relay module on ebay that will do the trick. Connect the 'on' to the unlock pulse and the off to the lock pulse.



Lambert, once the radio has booted, you can remove the power (ACC) for a few seconds and it holds up okay, so mostly the radio will stay live except on the coldest morning when the starter motor needs to turn for a long while.

Chris, electronics and cars often don't go together, there can be some quite large spikes on the electrical system. Years ago I built a pager alarm for my car, it was based on TTL/CMOS logic and I had to diode protect every input to stop it from failing. I even had to add a back up battery and trickle charge it to isolate it from the main car power system, still this was okay as it would trip if someone tried to steal my battery. Still a relay is not going to be a problem.

Now to find the CL and make the connections.

Hello, no help with the early power up but how do you find this head unit? Was it a plug and play job? Also before you succeed in getting it to start up early it might be worth making sure the starter motor dosent kill the power to it? It dose to my cb radio. Just read the above post after posting this.

Good luck

Fair enough if you're happy it will work. Also just to complicate matters don't forget that the Jimny is negative switching.