77vetteLS1

GM guys, if you want to keep your factory gauges use this combo from a 98 LS1 Z-28.

connector: 12102748
sensor: 12551708

The connector has three wires. The two that are side by side go to your computer the 'top' wire goes to your gauge. I got this piece of info from Jeff (70LS1) off this site a while back. I finally got the parts, I figured if anyone else is after this combo the part numbers would help alot. My temp gauge is accurate as far as I can tell. The fans come on at 190 and 205. I hope this info can help someone.


Clay
77 corvette
99 LS1/T56

Scooter70

iTrader: (1)

Cool. Thanks. Where did you put the sensor? I've heard of a few possible positions, but there really was no feedback as to which was best.

-Matt

70 LS1

iTrader: (1)

I am using an autometer sensor with the factory gauge. I installed it in the passenger's head near the back (same place as the factory one on the driver's side.) There is a plug (12x1.5) in the hole that either needs to come out, or you can drill and tap the plug and use it for the adapter. That's what I did. The gauge reads about 10 degrees off, but it shows trends and that's all I care about.

77vetteLS1

I replaced my sensor in the drivers side head (forward) with this new one. No drilling or tapping, just a quick solder job and I was up and running.

John B

iTrader: (10)

I just tapped the hole in the passenger side head and ran my OEM sensor into it and my temp gauge works great!