Turbo8

iTrader: (17)

I've installed aftermarket gauges before, no mystery there, I just had two questions pertaining to installing the gauges on my FD I hope you guys could help me out with.

I am putting in an AEM Wideband (not hard), Boost, and Coolant temp. Basically, what is the easiest way to route the wires for the sensors to under the hood? I looked around under the dash doing a lot of investigating on how to run the wires. I did notice a harness that exits through the driver side foot well and comes out the fender area under the hood. Is this the easiest way to run wires? I'm assuming I would at least have to remove the wheel well plastic and/or the fender to access this, however. Any other ways to run wires?

I have searched and read the FAQ's on gauges installs, but most were pretty vague or out-dated with old threads that had broken links/pics....

Also, would it be acceptable for me to drill and tap my metal AST for the water temp probe? I figured this would be a good source for coolant temp since the AST does get coolant off the t-stat (and other cars I have worked on have factory coolant temp sensors in the AST). Or should I just stick the probe in the TB coolant hose?


Thanks

caredden

iTrader: (148)

There is a grommet located above your pedals. IIRC, it is about 1" in daimeter, and that is where I ran my wiring through.

As for the temp sensor, there are a couple of threads about sensor placement. People will debate on where to put the sensor...

Good luck.

Charlie

Turbo8

iTrader: (17)

Thanks! I will look for that grommet right now.

As far as the sensor, I know it can be a "heated" debate, almost like synthentic vs non-syn! I was just wondering if the AST was viable at all. I might just put in the TB coolant line....

Finster

iTrader: (1)

You have to take off the driver side fenderliner and you can see the grommet plain as day

Turbo8

iTrader: (17)

Alright I got the routing of the sensor wires done, would have been much easier of the fender liner plastic rivets weren't stripped and I had to drill around 4 out...

So what about the water temp sensor in the AST? I know this can be a hotly debated topic but mainly is it a good idea? OK idea? Stupid idea? Retarded?

Thanks

ttmott

iTrader: (1)

Here is my 2 pennys. The AST does not circulate water; if it does it will be at a very slow rate, too slow to obtain any reliable temperature. I prefer the water fill neck as this is the main water circulation path back to the radiator and would be the best representation of the actual engine coolant temperature.

Gen2n3

iTrader: (1)

When I added my water temp gauge, I put the sensor in line with the throttle body coolant hose. DaleClark made a post about it. The temp readings at the throttle body are more representative of engine coolant temps. Follow this link for Dale's advise: https://www.rx7club.com/showthread.p...er+temp+sender

In the above thread you will also find the necessary parts for the TB install site. Good luck and let us know of your progress.

Finster

iTrader: (1)

+1 tb coolant line

Gen2n3

iTrader: (1)

it's hard to argue sound advice from Dale!

Turbo8

iTrader: (17)

Alright, thanks guys, I will be putting the sensor in the TB coolant hose.

Do I need to pull the TB itself to access this? I can clearly see the top hose but I have big hands so clearance is an issue haha

Finster

iTrader: (1)

you may have to drain some coolant so you dont have a mess, but no you dont have to pull tb