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Where to tap into for my tach?

gr8dain

Hater of Electronics
BENEFACTOR
Gold Member
Lifetime Member
SOA Member
City
Ashburn
State
VA
Does anyone know what wire I can tap into in order to get my tach to work? It is a 1998 4.0 from an XJ. Will the aftermarket tach I had on my 258 work? It has the switch for 4,6, or 8 cyl. Obviously I would keep it on 6. Just not sure if it will work with the 4.0.
 

Chamba

Not obsessed: focused.
Member
SOA Member
City
Vero Beach
State
FL
Negative coil wire is what gives the pulse the tach needs (I think it's yellow from memory, but I could be mistaken). It should work perfectly so long as you leave it on the 6 setting.
 
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