Hi guys 

 

I’m a bit perplexed by the wiring layout from the Skoda fabia mk1 radio unit. 
 

I tried tapping into the blue and white wire for the REM turn on for my amp, alas I discovered with my handy voltmeter that it’s a constant 12v supply. 
 

I tested all the pins and it seems that there is only one pin available that switches on and off with the ignition? My understanding was this was an alternative 12v supply and not the REM wire out. 
 

Can I wire the powered dab aerial and amp together for this one terminal? I wanted to ideally keep them separate. 
 

thanks 

Generally a power amp has a permanent live and a separate switched input to tell it when to wake up, the DAB aerial uses very little current and can be run from any switched live, the blue and white wire should change state depending if the head unit is switched on or off.

Check all this to be sure. I'm an armchair expert not a vehicle electrician.

 

IMO...

First pull off the battery earth lead.

Pin 5 (13 in your doc) needs pulling out of the car side connector. This can be done with a straightened paperclip or pin etc. Heatshrink and tape the wire out of the way as it's a permanent live.

Fit a new pin to your H/U to amp cable (remote turn on) and stick that into the connector in place of the supplied pin 5 (13) one.

That should solve the amp turn on issue.

 

Another way is to buy a loom adapter/extender and hack that. But that's more spaghetti to cram into the space behind the h/u.

 

The pins are available but probably cheaper to buy in a set with the connector(s).

https://www.google.com/search?sxsrf=ALiCzsaXMN7VLhOyWL164jx9Y_nSva-UVQ:1652178197843&source=univ&tbm=isch&q=8+pin+ISO+car+radio++pins+buy&hl=en&client=firefox-b-d&fir=mWmb8sRl89Y0KM%2CRDuWEmjanCUn1M%2C_%3BqB3udzH4cnAE4M%2Cdciv_1lTDTuPXM%2C_%3Bxx2hojzOmf_CjM%2COQ7nXYzK_1ysxM%2C_%3BxFMpNWlFWqnfiM%2Ch40_u9v2TTsv-M%2C_%3B1WUH8dJmOWU4lM%2COQ7nXYzK_1ysxM%2C_%3Bt1cDwZNm4NLGIM%2CHLc8vUCeqFnJzM%2C_%3BXRXJV_x4jIPluM%2CTHn2QX3QlvRQHM%2C_%3B2huRcYOC3jwX1M%2CUzZ0U38NHg5HZM%2C_%3BUGXE3mnnZV2ZAM%2Ch40_u9v2TTsv-M%2C_%3Bc_khWqPsbWKdLM%2C32RRFDizVfLiMM%2C_&usg=AI4_-kRBpV1ZONbZC9-0l5wmri6Zd5LHbA&sa=X&ved=2ahUKEwjM7tm029T3AhXFWMAKHUOsAikQjJkEegQIVRAC&biw=1600&bih=1075&dpr=1

 

 

https://workshop-manuals.com/skoda/fabia-mk1/vehicle_electrics/electrical_system/infotainment/radio_systems_i/contact_assignment_of_multipin_plug_connections_a_b_c_on_rear_of_radio/

I sorted the issue guys! Thanks for all your responses.

 

I cut the blue white wire that is my REM out from the radio and attached my DAB wire to that which is all working now.