Changing gauges, oddometer worries?

[Waspy]

Not really off topic, but who know where it goes...

If you fit, for example, a new speedo, as you are cool as sh!t and want a custom dash, where do you stand on the oddometer front? It's illegal to tamper, does that make it illegal to replace? Since the new one will probably say zero.

What if the actual speedo broke and needed replacing. It's not like you can set it to the right milage...

[dubber36]

As long as you document the change in the service history, you'll be ok. The offense is to sell a car with on the pretense that a vehicle has done a lower mileage, but if you can show the buyer that the car did 120k miles on it's original speedo, then you fitted a new one, all will be good.