help with car audio

[damz]

bought an mx-5 a week ago and just installed a cd player and for some reason it will only work if the lights are switched off. if i put the cd player on then turn lights on it just switches off completely.

any ideas what could cause this?
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Current Bikes RVF400 - 94
Cars: RX7 FD, Eunos Roadster
Former Bikes: FZR 250R 89, ZX7R 98

[Phoenix]

Dodgy wiring behind the dash, presumably the same happened to the radio you replaced if there was one. Take it out and check the wiring, check there's no dodgy taped up bits, possibly somebody has linked the radio wiring with something in the light switch for some reason.

[The Shaggy D.A.]

Since it's an MX-5, the CD player will only play Fun Boy Three with the lights on.
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[damz]

[Groove]

Answered your own question there havn't you.
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[Knacker]

[Tango675]

Sounds like the interiour light circuit (the one that lights up all the bits on the dahboard) is shorting something out..

Attack with multi-meter until problem found....
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Somebody give that windup merchant a torque wrench..

[damz]

[Tango675]

If its a MK1 MX-5 I have the haynes manual inc. wireing diagram if that will help.
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Somebody give that windup merchant a torque wrench..