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View Full Version : Wiring up gauges for Gen V LT4?



SPG
06-26-2020, 08:12 PM
I'm putting a Gen V LT4 in my 2nd gen camaro and I have most of it figured out for the most part. Some things online aren't documented all that well though so I have to figure it out on my own.

One of those things is gauges. It's pretty similar to an LS swap for the most part, but a few things I just want clarification on.

I'm using the following autometer gauges as reference

Tach 6297
Speedometer 6288
Oil Temp 6148
Boost 6103
Oil Pressure 2552
Water Temp 2532
Voltmeter 2592
Transmission Temp 6149
Fuel Level 6118

Obviously three of those have nothing to do with the engine but I figured I'd mention it anyways

The Tach and speedometer are the two I'm having issues with because the LT engine gets the tach signal a different way. I plan on getting dakota digital sta-1000 https://www.summitracing.com/parts/dak-sta-1000 Does anyone have experience with this? Since the engine harness has to plug into the 4l75 vss sensor it should technically work....but I can't find any info on it.

The next thing would be the standard sensors, can I just tap into the ones the engine already needs? or will that cause issue with can and need separate sensors no matter what.

I think most people tap into the boost solenoid but I'm not entirely sure.

andrewb70
06-27-2020, 09:31 AM
What does the LT4 installation guide have to say? If the GM LT4 harness kit is like their other kits, there will be a connector in the harness that has various useful outputs, like for the tach and for the speedometer.

Andrew

SPG
07-02-2020, 06:40 PM
I found the wiring diagram on the bulk head connector
looks like getting speed, tach, and oil pressure is right on the bulkhead which is nice but it has to plug directly into the transmission controller according to the instructions. So I'm not 100% sure if I can tap into these wires without issue.

So I guess the only thing I'd have to tap into is boost and water temp on my own if I can use the bulkhead

Every thread/article I found on this said I needed the dakotadigital....maybe it was because tapping into the bulkhead caused issues? not sure.
https://static1.pt-content.com/images/pt/2020/07/1e0e8df674f49c908ae003803f034d28-1.png


Edit:
Looking at the transmission wiring diagram, it has 3 wires that produce the signal I need, so I believe this will solve my issue
177334

andrewb70
07-02-2020, 09:48 PM
Does Dakota digital make a CAN interface? If the do, use it.

SPG
07-02-2020, 11:03 PM
Does Dakota digital make a CAN interface? If the do, use it.

They do, but it requires me to use their gauges and I don't want to.

EvaaWilli
07-03-2020, 10:20 AM
About just the information that I was looking for, thanks!