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gauges gauges gauges...looking for any tips

1376 Views 21 Replies 7 Participants Last post by  bigwilly43729
I've looked around and there isn't much out there(that I could find) to help with my upcoming project of installing gauges. I haven't gotten my gauges yet but I hear the instructions suck. Not looking forward to this...running wires and stuff:happyhapp

First, do you need to weld another bung into your exhaust for the AFR gauge?? If so wouldn't this be easier to get done before I install the headers?? And wheres the best place to weld it??

Water temp gauge...how easy is this to install?? Any tips and info would be great.
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I need the same help! Same 2 gauges.

Also where is the best place to go through the firewall?
As far as the bung, for your air/fuel ratio gauge somewhere between 10 - 2:00 o'clock in the collector, Mike. SCT Tuner.:bigthumbsup
I've looked around and there isn't much out there(that I could find) to help with my upcoming project of installing gauges. I haven't gotten my gauges yet but I hear the instructions suck. Not looking forward to this...running wires and stuff:happyhapp

First, do you need to weld another bung into your exhaust for the AFR gauge?? If so wouldn't this be easier to get done before I install the headers?? And wheres the best place to weld it??

Water temp gauge...how easy is this to install?? Any tips and info would be great.
Yes, it would probably be easiest to weld the bung for the Wideband O2 sensor before installing the headers, but I would remove the stock manifolds and test fit the headers so you can ensure you'll have enough clearance for the O2 sensor when its screwed in. I put mine in my drivers side, but you can do it pretty much any place before the cats like Mike said.

Wiring gauges isn't a big deal, you just need a switched power source, constant power source and good grounds. Good grounds are important for AFR gauges.

The water temp gauge, most drill and tap a new location for a sender, you can do a search and find the exact location. I know a few others that use one of the freeze plugs in the engine block. I don't know how accurate that location is though.

There are two rubber grommets on the drivers and passengers side of the firewall. You can just CAREFULLY cut a small slit to feed your wires through. You'll have to remove the plastic wheel well piece to get the wire on the other side. Good luck
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The water temp gauge, most drill and tap a new location for a sender, you can do a search and find the exact location. I know a few others that use one of the freeze plugs in the engine block. I don't know how accurate that location is though.


+1 on the water temp using a freeze plug. The freeze plug opening you need to use is on the driver side of the block. Just below where the head is connected to the block. It is a pretty simple install. Be sure to use teflon tape on the sending switch threads.
The freeze plug sounds like a good/easy way to do it. But if most people don't do it this way, maybe theres a reason?
I couldn't see a reason to drill and tap ahole when there is one already there from the factory. Why risk making an error with the new drilled hole? That is just my opinion. I used the freeze plug hole with no problems. I get accurate water temp readings, and no leaks.
I read somewhere to take the factory sensor out and move it to a freeze plug then use te old factory sensor spot for your new gauge. makes sense doesnt it.
I read somewhere to take the factory sensor out and move it to a freeze plug then use te old factory sensor spot for your new gauge. makes sense doesnt it.
There is no factory water temp sensor. Water temperature is inferred from the head temp sensor which is installed under the plenum cover in the passenger side head. Most install their sensor on the coolant crossover tube. I have mine installed in the drivers side freeze plug (way more accurate).
is this freeze plug you guys are talkin about need an allen key to get out???
Yeah I think it is an allen screw. But some are expansion (compression) fittings.
I have no idea what that is..expansion/compression fittings. can you explain?

Is this plug located near the back of the motor...under what looks like to be a brass plate with a red/orangish cable attached to it???
ok stupid me....the brass cover and cable are a block heater...you guys down south might not have one or know what they are. But it obviously uses a port in the block to get to the coolant. now theres another plug just under there that is an allen screw type. Will this be ok to use?? Or should I take out the block heater???
ok stupid me....the brass cover and cable are a block heater...you guys down south might not have one or know what they are. But it obviously uses a port in the block to get to the coolant. now theres another plug just under there that is an allen screw type. Will this be ok to use?? Or should I take out the block heater???
I think that's the one I used. Take a picture and I'll know for sure.
ok I'm trying to attach a photo here...not sure if it'll work or if its even the right picture...hope its not a nudie of the gf

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the one with the block heater or the other one??
the one with the block heater or the other one??
The other one! :)
DEADLY!!! thanks stl.:bigthumbsup
Gauges are very easy to install. They look overwhelming, but they aren't. As far as wiring, I highly recommend getting a Painless Wiring fuse block that will meet your current and future needs. They are very easy to use and provide for a clean install as well.

I made a simple picture of how these things get wired up, but unfortunately, I'm at work and can't access it. I'll put it up when I get home in a little while. It should be of great help to you.
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