inline6power
more hp than you
- Joined
- Apr 15, 2007
- Messages
- 3,485
Justin as the title states looking for a 98 12v harness PCM and gauge cluster
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Sent from my iPhone using Tapatalk Pro
If we talk about engine harness, then 97 verus 98 12 V is only few connector difference.
98 12V PCM will work in 97, but not oppoite way
Under dash harness is different
How will you make a '99 ECM work with a CR? What will the CR ECM do with the '98.5 gauges?
Nothing '97 interchanges with '98 12 valve, with respect to PCMs or harnesses.
This is why the '98 12 valve harnesses and PCMs are valued like gold and even rarer.
In 1998 the PCM communicates with the dash cluster (BUS Comm.), '97 does not.
In 1998 the speedometer is read at the axle carrier tone ring, in '97 it's read at the tail housing of the t-case, or transmission.
If you try to swap the harnesses between 1998 and 1997, be aware that the whole layout of the dash is totally different, which means you MAY have to lengthen or shorten wires.
Mark.
i dont think the tach would work as the 24v ecm needs to see a crank sensor and the cr is already using that
You could do the crank sensor like I did on my 12V with a tone wheel on the damper.
I got it from Destroked. It comes as a kit with a universal sensor that did not work. I had to modify the bracket to accept the Cummins crank sensor.
Destroked 36-1 Tach Kit
Is your tach smooth or is it jumpy? The one on my conversion misses and jumps like mad.
It's nice and smooth.
Now, I will tell you this. I put a new crank seal in last fall and had to remove the sensor. As it got colder, the tach wouldn't work when it was cold and would start to work as the engine got warmer. I loosened the bracket bolts and pushed the sensor as close to the tone wheel as I could and it works fine now. Evidently the sensor need a VERY small gap, like maybe .020", to function properly.
I also could not get the Destroked bracket to mount as they designed and fabricated a brace off another bolt so it cannot move.