I am looking for isspro tach instructions
Thread Starter
Registered User
Joined: May 2005
Posts: 2,867
Likes: 536
I am looking for isspro tach instructions
I lost mine, and going to their site does me no good w/o model #'s. I am needing word for word where 1993 oem wires connect to the special isspro tachometer harness. If anyone can link me to the installation instructions to isspro's site or scan their istructions and send them to me, I would appreciate it.
Registered User
Joined: Jan 2004
Posts: 995
Likes: 2
From: East Central OK
Without knowing what tach you have, try this and see if it points you in the right direction.
http://www.egauges.com/pdf/Isspro/IS128.pdf
On Edit - Still haven't found the the '92-'93 pin out that you need. Isspro shows instructions for all gauges but doesn't list them for the R5501 (the model that I'm guessing you have).
Strange.
http://www.egauges.com/pdf/Isspro/IS128.pdf
On Edit - Still haven't found the the '92-'93 pin out that you need. Isspro shows instructions for all gauges but doesn't list them for the R5501 (the model that I'm guessing you have).
Strange.
1st Generation Admin
Joined: Jan 2005
Posts: 4,601
Likes: 118
From: Buies Creek, NC
The OEM factory tachometer plug offers the following:
- 18ga Black = +12vdc for gage lights
- 20ga Orange = 12vdc Common
- 18ga Red = Switched +12vdc
- 20ga Grey w/light blue tracer = Tachometer Signal From PCM
As found here ~ https://www.dieseltruckresource.com/...d.php?t=173561
- 18ga Black = +12vdc for gage lights
- 20ga Orange = 12vdc Common
- 18ga Red = Switched +12vdc
- 20ga Grey w/light blue tracer = Tachometer Signal From PCM
NOTE: If you're gonna run the ISSPRO gage that I have, do not waste your money on the ISSPRO adapter. To start with, the included instruction is backward in that it directs one to connect the 2 1/16" gage to the adapters white wire. As such the built-in filter component of the adapter is placed in the signal circuit.
Wired as such, the gage WILL NOT function.
The correct wiring has you connect the yellow wire which equates to a direct connection from the trucks PCM to the gage.
As such, the adapter amounts to an expensive 3' piece of four conductor wire with individual connectors on one end (NO molded plug for the OEM connector under the dash as some might think).
Save your money and use your own wire and connectors from Radio Shack.
Wired as such, the gage WILL NOT function.
The correct wiring has you connect the yellow wire which equates to a direct connection from the trucks PCM to the gage.
As such, the adapter amounts to an expensive 3' piece of four conductor wire with individual connectors on one end (NO molded plug for the OEM connector under the dash as some might think).
Save your money and use your own wire and connectors from Radio Shack.
As found here ~ https://www.dieseltruckresource.com/...d.php?t=173561
Thread Starter
Registered User
Joined: May 2005
Posts: 2,867
Likes: 536
Guys, thanks a plenty. I used the links to get Isspro's phone number and tech support emailed me all the directions, including a CAD design sheet to manufacture the harness for the tach to tie into the OEM plug. Thanks again.
Thread
Thread Starter
Forum
Replies
Last Post
jmccart
3rd Gen High Performance and Accessories (5.9L Only)
4
Mar 6, 2007 07:17 PM