So I have an after market radio hidden in my glove box to keep the original radio in place and looking the part, but for the last period of time it has had a direct wire straight to the battery with no fuse in line. So today I thought I would be slightly more sensible and do the job properly using the original wires for the old radio. The speaker wires have already been scotch-clipped together to suit the new radio input, but I only have one battery input rather than two on the original for permanent live and ignition live... When plugged straight to the permanent live, it doesn't turn on, when connected to the ignition live it does come on, but when the keys are then taken out obviously it loses all the stations that are preset.
My question is, can I safely connect the permanent live and ignition live from the original wiring and connect this with the new radio, or is this not safe?
Also, simply from unplugging everything my aerial has decided to stop working, guessing this would be a case of just checking the relay...?