Gauge hook-up questions?
Thread Starter
Joined: Jul 2003
Posts: 1,290
Likes: 14
From: Wellesley, MA
Gauge hook-up questions? Have a water temp gauge, and a air/fuel gauge to hook up. Two questions...
1) For water temp i searched and found that everyone is using the plug in the back of the passenger head, but to do so you need an adapter... autometer part # 2275 ? Is that the only thing you need? Any info on this would be great!
2) What wire do i have to tap into off the 02's for the air/fuel? I made my own o2 extentions so dont mind cutting into them! I know thunder racing sells the adapter, but i'd just assume tap in. Thanks again!
1) For water temp i searched and found that everyone is using the plug in the back of the passenger head, but to do so you need an adapter... autometer part # 2275 ? Is that the only thing you need? Any info on this would be great!
2) What wire do i have to tap into off the 02's for the air/fuel? I made my own o2 extentions so dont mind cutting into them! I know thunder racing sells the adapter, but i'd just assume tap in. Thanks again!
Originally Posted by nikon1999
Have a water temp gauge, and a air/fuel gauge to hook up. Two questions...
1) For water temp i searched and found that everyone is using the plug in the back of the passenger head, but to do so you need an adapter... autometer part # 2275 ? Is that the only thing you need? Any info on this would be great!
2) What wire do i have to tap into off the 02's for the air/fuel? I made my own o2 extentions so dont mind cutting into them! I know thunder racing sells the adapter, but i'd just assume tap in. Thanks again!
1) For water temp i searched and found that everyone is using the plug in the back of the passenger head, but to do so you need an adapter... autometer part # 2275 ? Is that the only thing you need? Any info on this would be great!
2) What wire do i have to tap into off the 02's for the air/fuel? I made my own o2 extentions so dont mind cutting into them! I know thunder racing sells the adapter, but i'd just assume tap in. Thanks again!
for the A/F meter look for a bundle of wires that goes down to the starter (passenger side). It goes from the ECM to the Starter and two 02 sensors on the passenger side... you can't miss it. Get the A/F meter and with the car on tap into a purple wire with a white stripe or a solid purple wire until the LEDs in the A/F ratio meter start to light up like crazy.
i went right to the pcm for mine, forget the pin number but if u want i can go look. i have the same exact gauge set up in my car plus shift light. where i ran the wires u cant see any of them, period. its nice
TECH Enthusiast
Joined: Sep 2004
Posts: 598
Likes: 0
From: Midland, TX
I hid mine quite well also. I used the adapter for the A/F gauge though. I also heard that a good place for the water temp is on the back of the block just above the starter. Here is the link explaining it: https://ls1tech.com/forums/generation-iii-external-engine/284279-aftermarket-water-temp-sender-placement.html
you can also install the water temp sender in the freeze plug right above the starter. youll need an adapter. I got mine from Autobarn (Equus adapters) and the whole adapter kit was like $5. I dont remember the size but it was the second to largest one. People complain about them breaking, but if you install the sender into the adapter first and put it in I dont see any problems with it breaking.
Trending Topics
TECH Enthusiast
Joined: Sep 2004
Posts: 598
Likes: 0
From: Midland, TX
Originally Posted by GregWS6&z28
you can also install the water temp sender in the freeze plug right above the starter. youll need an adapter. I got mine from Autobarn (Equus adapters) and the whole adapter kit was like $5. I dont remember the size but it was the second to largest one. People complain about them breaking, but if you install the sender into the adapter first and put it in I dont see any problems with it breaking.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
For A/F, tap into the purple wire coming off the passenger side front O2 sensor. You can follow this wire up from the sensor to where it enters the PCM. This way you wont need to get under the car. There is a bundle of wire that goes to the PCM. On my car, there were only two purple wires in this bundle, one larger than the other. The smaller one goes to the O2 sensor(splice into this wire), and the other goes to the starter. Since you will be under the car anyways to put in the water temp sender, you can trace the wires to verify you have the correct ones. For the water temp, just read the link above.
