XFI Install... How to keep factory cluster gauges working???

[roadtrip120]

What is the best way to install the FAST XFI and keep my factory cluster working for a few of the gauges??

Looking at trying to keep the , Speedo, Fuel Level, Oil Pressure, Battery Voltage


Do i have to still run the factory pcm to talk to the cluster or can i tie the sensors into the xfi, or just tie the sensors straight into the cluster harness at "C210 ,C220, C230"??

[Fastbird]

Easiest way is with something like SRZ and Myself have, a Fast Track harness, or similar. It's an integration harness but does the trick. You still need the factory pcm to talk to the cluster.

[roadtrip120]

Easiest way is with something like SRZ and Myself have, a Fast Track harness, or similar. It's an integration harness but does the trick. You still need the factory pcm to talk to the cluster.


How much is this integration harness? I found something on there website but it looks to be the hole engine harness for 600.00, or XFi and harness for 2000.00

[Fire67]

I personally wasn't willing to fork over the dough for one of those harnesses. Instead, I cut the sensor connectors, and the engine harness to chassis harness connectors off of the stock engine harness. Then, using diagrams from shbox.com I made a new harness for the sensors. I have water temp, oil pressure, and battery voltage working fine. Not sure about your 94, but on my 96 the Speedo will not work without the pcm or a box from dakotadigital. I have my tach wired directly to the Points output on the FAST harness. The tach functions, but wrongly. It jumps around and will show 6500 when I am in fact at 3500. Lately it doesnt seem to be as jumpy, but for all I know its just wearing out, lol.

[roadtrip120]

I personally wasn't willing to fork over the dough for one of those harnesses. Instead, I cut the sensor connectors, and the engine harness to chassis harness connectors off of the stock engine harness. Then, using diagrams from shbox.com I made a new harness for the sensors. I have water temp, oil pressure, and battery voltage working fine. Not sure about your 94, but on my 96 the Speedo will not work without the pcm or a box from dakotadigital. I have my tach wired directly to the Points output on the FAST harness. The tach functions, but wrongly. It jumps around and will show 6500 when I am in fact at 3500. Lately it doesnt seem to be as jumpy, but for all I know its just wearing out, lol.

is this what you bought to make the speedo work?
http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=126/category_id=287/home_id=59/mode=prod/prd126.htm

[Fire67]

My speedo doesnt work, lol... But that IS what you need in order to make it work.

[The SRZ]

How much is this integration harness? I found something on there website but it looks to be the hole engine harness for 600.00, or XFi and harness for 2000.00
Yep, that's the one. I paid a little less than that a few years back though but still worth every penny. Problem w/ using your own factory wiring is you have to track every wire down whereas his is pretty straight forward. Just depends on how you want to skin the cat. For a beginner like myself at the time I needed something done vs dickin around w/ the factory wiring. The one good thing w/ using the factory wiring would be it'd look really factory. My stuff is all hid but you still know something's up. ;) All my guages work as factory. No tach issues here.


is this what you bought to make the speedo work?
http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=126/category_id=287/home_id=59/mode=prod/prd126.htm

I use the dakota as well and works flawlessly.

[Fastbird]

Three years ago now my XFI harness from FastTrack was $375.

[Fire67]

...All my guages work as factory. No tach issues here.
Somebody had enlightened me to this a while back. It seems that with the 93 cars the tach was not driven by the pcm. Those cars had some sort of buffer built into the wiring too though. I know my 96 did not have anything of the sort built into the wiring, and my tach acts funny. I imagine I could add something to the wiring to buffer the signal, but I plan to eventually replace the stock gauges anyway.