Gti6 Rev Counter Jumping!

[Rams_gti6 12 1 Cars]

Just got my two zero back from fabricators and noticed on way back seen as I had my lights on for first time in months, that my rev counter was jumping about without engine changing. Also lights seemed to flicker I think aswel. Anyone had same trouble and where is the connector for rev counter?

James

[ORB 227 1 Cars]

How's it wired up?

[dcc 855]

check alternator current

[Rams_gti6 12 1 Cars]

Not sure how it's wired up I thought it seems like a loose connection somewhere. Stick a voltmeter on the battery and make sure it's kicking out right voltage?

[allanallen 528 2 Cars]

It could be done several different ways, either the clocks modded, diodes/resistors fitted to coils or a converter box thing. You need to know which it is before anyone can attempt to help you beyond very basic checks