[Chip]

Aren’t those the standard ISO connectors? Make your own adapter following the wiring diagrams for the vehicle.

You can get the connectors with loose pins and crimp/solder them onto the harness that came with the radio.

Like this. Buy M-68-KIT Car Radio Female Speaker & Power 16 Pin ISO Connector

 

[Chip]

Oh I see what’s going on. That pink connector is a 10 pin ISO. You need the matching connector like this one. It looks like Audis came with that too, so maybe you could find an adapter for an Audi.

(I just found it via Google image search. I don’t know anything about this shop. There’s probably one on eBay or somewhere.)

10-pin ISO connector with individual contacts, 7,99 €

10 poliger ISO Stecker mit Einzelkontakten

wibutec-shop.com

 

[Chip]

I found the connectors with my usual supplier in Europe. Which radio are you installing? I could make you an adapter. Im trying to calculate in my head what it would cost. I’m gonna say $30 shipped.

 

[Chip]

That's awesome you found the right harness adapter. Maybe it would be best to replace the factory amp though. Run RCA cables to the new amp from the head unit and connect the speakers to it.

I found that too about the cubby radio mounting, so I cut out a piece of wood to secure the head unit into the opening. That was before I got another cubby with a plastic fascia in better shape. Maybe I'll cut out a sheet of aluminum and screw that in to go underneath the fascia.

 

[Chip]

That's a really odd issue. Have you inspected the alternator wiring or tried swapping out the alternator or voltage regulator? Maybe also check the ground cable from the battery to the t-case. Could try running an additional ground cable from the t-case to the chassis. That's how it is on the later Defenders (it connects to both).

 

[Chip]

It looks like the regulator is installed just beneath the cover. It appears to be part # STC985. Might be worth inspecting. And you’ve already rewired the radio grounds? Maybe something became loose or a brittle old ground wire broke during radio removal or install.

You could also rewire the speakers with shielded cable or wrap shielding around the existing ones. And make sure they are twisted together.