Clock Swap

I just got a 95 RR Classic analog clock to replace the digital clock that was broken in my 99 disco 1. The conversion isn't plug and play and wires need to be cut to make the conversion work. I got the clock to work but radio and dome lights aren't working now. If anyone has done this some advice would be greatly appreciated. I was thinking that perhaps that 4th wire completes a ciruit but like I said I know nothing about wiring.

Peter

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I figured it out, no need for a reply. I blew the "anit-theft" fuse. Once that was changed then the radio and dome lights came on.