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Discussion Starter #1
Hi have anyone done S1-S2 dash conversion before?

Basically mine already done S2 dash conversion on my pre facelift. Everything seem work fine.
Just only couple things is heater control and tacho aren't working .

So I assume could be clock loom might be different from S1 and S2 but the plugs straight fit in the clock cluster

Trd tacho oringnally came off NA but I modified resistor and its was worked on TT.


Tuning garage took my tacho out and wiring to syvec ECU, still not working.


Anyone have similar problem?
 

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Stock Twins King
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4,439 Posts
what did you do to change NA to TT? Did you remove the 43k and put in a 1k? That is the proper way and has worked for me every time. I am stumped tho...are you stating you fitted in S2 cluster into a S1 car? That can be quite a job as not all pinouts crossover. A NA cluster has the tach signal wire straight from the Igniter. TT it gets it off the ECM as a 5v signal. Now the 1k resistor fixes this w/o rewiring to the ECM 5v signal. I guess it depends on how or where you are getting the proper tach signal
 
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