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Cj7 tach issue

Cj7 tach issue

Hog Head

Jeeper
Posts
127
Thanks
0
Location
Rockwall, TX
Vehicle(s)
'83 CJ7, FI 4.0L, Jeep T18 Short Tail, Dana 300, Dana 30 Front, AMC20 Rear w/one piece axles
'51 Willys M38 Original
Was curious if anyone had any experience with a 4.0L swapped in to a CJ7 and trying to make the tach work. I have a ground, switched +12 and the other wire connected to pin 43 of the pcm and still get no reading. Do I have this connected correctly? Thanks in advance for your help.


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Hesco sells the mechanical/electrical combo so you can keep your stock tach.


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