Dead Cruise Control After High Amp Jump Start

[brummie3LV6xantia]

just a little annoying, after using one of those emergency booster battery jump starters the rev counter died as did the cruise control. apparently the rev counter would need whole replacement of the dials for £200 so i'm not bothering with that since its an auto with a rev limiter. the more annoying this is the cruise control stopped working, i'm not sure if it fried the cruise computer or if there is a relay that fried , i'm not sure where i should be looking for the possible components that have died. and if it is cruise computer i will be looking in scrappies for . what i am after here is where the components i should be checking for frying are... many thank yous

[DickieG]

I can't help with the cruise control but to sort out the rev counter, remove the dash pod (25 Torx size 20 screw's!) then simply turn the dash pod upside down and the needle will fall back into position.

 

The needle getting stuck beyond max rev's tends to happen when the battery goes flat, I believe it's due to the instruments being 'Solid state'.