DTA S40 and Mk2 Rev counter

yeah tbh I would only do this for CE2 VDO type as they are reasonably easy to get spares for and its all on one board. the thing with earlier ones is the oil pressure board is seperate so I'm not sure if that needs a full amp tacho signal or not as havent traced one out to see if its before or after the filter

it only makes sense for me as I need the low amp tacho signal for my climatronic install so I may as well use 1 rev counter signal for everything rather than have one for tacho and another for climate

 

yes the oil pressure board is a separate component clipped inside the speedometer shell, if you chased the tacho trace from the cluster pin to the main board and over to oil board then bypassing the filters on the main board and using a low amp tacho signal would mean you lose oil pressure warning I expect, I assume the control chip on the oil board has its own filters you may be able to bypass though. but yah, no need, just use adaptor

 

by main board i mean the one in the middle with the mfa computer and lcd attached
https://www.clubgti.com/forums/index.php?threads/motometer-cluster-mfa-repair-fix-found.288785/

then theres another smaller L shaped board which is clipped inside the speedometer which handles oil warning system

 

think this thread has been well and truly hijacked, just like the old days