Are relays vehicle or circuit specific?

Valiante said:

I know this will probably sound like a dumb question to most, but I simply don't know and several Googles later I'm still none the wiser.

Are relays as interchangeable as fuses, i.e. can I just pick up any "40A" relay from Halfrauds and swap it with one that's burnt out? Or do I need to find a specific part / type / etc?

Again, apologies for my lack of knowledge but I've never had to touch relays before so I simply don't know!

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Datatek said:

Some are specific. If the relay is burnt, it's possible, even likely that the fuse box has burtn too. It's quite a common problem

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Valiante said:

I haven't checked it yet, but have a "handbook symbol" on the ATC ECU display and I've read that the most common cause is a failed relay 7. Getting a little ahead of myself, but it occurred to me that if I found it to be faulty, I wouldn't know where to get a replacement or which one to get, etc. No amount of Googling seemed to help.

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Valiante said:

Any tips on how I'll know which one to order?

Jaguar | Land Rover spare parts at British Parts UK

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wammers said:

If your radio is working don't think it will be relay 7. Relay 7 also feeds radio and sat nav. 1999 models others may differ.

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Valiante said:

Oh, yeah the radio works (I have no built-in sat nav). It's a 1995 petrol, if that makes any difference.

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