I put a Z110BT in my diesel F250, and the problem I'm running into is I have to turn the key to the 'run' position to let the the glow plugs heat up, maybe 5-10secs and at this time the Z110 starts up. Then when I start the engine, power is momentarily removed from the unit so it has to go through its start up mode again. I'm looking for ideas on how to prevent this as it can't be good for the Z. Is there something like a relay that needs to see 12v twice before closing or a capacitor that will allow the unit to ride through the engine start? Thanks.

I put a Z110BT in my diesel F250, and the problem I'm running into is I have to turn the key to the 'run' position to let the the glow plugs heat up, maybe 5-10secs and at this time the Z110 starts up. Then when I start the engine, power is momentarily removed from the unit so it has to go through its start up mode again. I'm looking for ideas on how to prevent this as it can't be good for the Z. Is there something like a relay that needs to see 12v twice before closing or a capacitor that will allow the unit to ride through the engine start? Thanks.

Read this thread. Link Many vehicles have a similar issue when listening to the radio with the engine off (just ACC on), then when you start the engine - the unit reboots. In your case you could use the PAC TR-7 mentioned in that thread to set a startup delay. You could get fancy with this relay - like requiring 2 pulses, before powering-up. And/or program a shutdown delay to keep the head unit up when your ACC shuts off while cranking the starter.

Nothing Fancy needed. I had the same dilemma with my F250 and X920BT. I added a simple momentary switch that when pushed supplies 12 volt to the power wire on the X920. You'll need to find a CONSTANT 12 volt source to tie the switch to. So I can now turn key to RUN and allow the glow plugs to run all while the X920 boots up, push and hold the button and then start the truck. The X920 stays up and running. Works when shutting the engine off and going to the ACC key position too. If you found the switch (hidden) you could jump in my truck and hold the button down to power the radio without a key at all.

Hope this helps.