We have a SAAS tachometer (new), our problem is that it only reads half rpm at idle and even less when the rpms are increased, we have it wired to the rpm wire as indicated in the wiring schematics.( wire is also tagged as Tacho)
Is there any particular tachometer that matches the wiring for a legend or are we missing something or can it be wired in elsewhere to obtain the correct rpm.?
Yes it's switched to 4 cylinder mode( tachometer has 4,6,8 switch)...