Speedo not working when radio connected

2002 Rover 25 1.4
Car: Rover 25
Year: 2002
Variant: 1.4
Categories: Running Rough, Starting & Power Loss
Recently brought a 2002 Rover 25 with no radio/cd connected. Installed an LG radio/cd (using existing Rover radio connections) and the speedo ceased to work. When I disconnect the stereo unit the speedo works. Has anybody any thoughts?
Problem added: May 17, 2011 (12 years ago)
wiring harness has been played with try finding ignition switch for the radio or run a wire from ignition to the back of the radio this might solve the problem
Answered May 22, 2011 (12 years ago)

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