Tachometers ?

[AMC86Kid]

Does anyone know any good aftermarket Tachs that I can install on my truck 

 

also if there’s any info on how the stock tach works would be nice to, I’m pretty sure mine is broke but I could at least check it out to confirm my belief

[Green Mesa XJ]

Those instruments are simple, the tach wiring exists in the harness regardless of trim package options. Unless someone cut or altered wires going to the ignition coil it’s working up to the point it goes to the gauge.

Do any of the gauges work? There is a fuse that powers the gauges.

These tachometers are easy and simple, if I remember I’ll break out the 86 electrical trouble shoot guid a post a few pics. Although I might have already done that responding to posts here years ago,

Looking back at my orders I bought a cheap tach from amazon to test the dash against Docooler Tachometer Tach Gauge with Holder Cup for Auto Car 2" 52mm 0~8000RPM Blue LED Light. I see some have given it poor reviews since then. Might be better ones out there. I used it only to test the other gauge clusters, didn’t install it for daily driving.



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[AMC86Kid]

My doesn’t work correctly 

when you hit the gas it just soars up in rpm to a crazy number 

 

only reason why I really need it right now is so I can set my timing at the correct rpm 

[Limeyjeeper]

Where is the tach feed coming from ? Seeing that you have an L32 under the hood.

[Pete M]

is your cluster original to the truck?

[Eagle]

1 hour ago, Limeyjeeper said:

Where is the tach feed coming from ? Seeing that you have an L32 under the hood.

 

Along with this question, what are you using for an ignition system? Do you still have the factory coil from the 2.8L, and are you using that?

[Green Mesa XJ]

I was assuming the Jeep was using the factory 2.8 harness, if it’s using the 3.4 or electrics from it I’m not sure how it’d work


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[AMC86Kid]

It still has the stock Tach in it from the 2.8 

currently using and electric distributer 

[Green Mesa XJ]

Is the engine harness original off the 2.8 Jeep ? Are you using all the factory Jeep/gm ignition off the 2.8 engine?

I don’t know what the 3.4 has for ignition coil

If it’s all factory Jeep then the tach should be correctly wired. Either bad cluster tach or something was cut and spliced on the engine side


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[AMC86Kid]

Yes I plugged the distributer into the 2.8’s electrical connector 

ignition is the same I just turn the key

[70barracuda]

Bosch makes a great cheap tach. Just 4 wires and a hose clamp to the steering column and done. I had a small one for a bit but went up to the bigger size. It perfectly covers the stock tach without getting in the way of anything else. 

[AMC86Kid]

Nice 

i wonder if they make any with a lower 

max rpm number 

cause I’m never gonna go 6700 rpm