hey i need some help i wanna tap the stock tack wire behinde the cluster but im not sure what it looks like can anyone help me out lol i got everything hooked up buut the green wire to the tack.
For oil pressure, you want to go down to where the oil pressure regulator is, just down at the front of the driver side head. You will see a single wire going down to it from the injector harness. You can T off of there somewhere with the proper fittings. As for the coolant temp I would go off the intake manifold someplace. Depending on what intake you are running, you may be able to just unbolt one of the threaded in caps at the back of the intake and put your sensor in there. But I am not sure if you want to have it reading at the back of the intake or the front of the intake.. Im sure someone who has actually done it will let you know lol
I guess it really depends on wether the gauges are Mechanical or Electrical. Mechanical you dont have much choice, and the thing with Electrical Gauges, is that usually the Sender that comes with them are designed to be used with that gauge. Meaning that you cant use the stock oil pressure sender with an aftermarket in most cases, as it will read way off. I tried it once and it just pegged the gauge.
1.) Remove old pressure sender. It is located down by the oil filter and has 1 wire on a push on screw connector.
2.) Install ¼” pipe tee fitting with a short ¼” nipple on the place where you removed the oil pressure sender.
3.) Install the original oil pressure sender back in one of the tee ports.
4.) Install the gauge line restrictor in the remaining port of the tee.
5.) Connect the flex tubing or hydraulic hose to the gauge restrictor. Be sure to route the tubing or hose away from the exhaust manifolds. Be sure to either use hydraulic hose or oil and heat resistant flex tubing for the pressure line. Do not use copper tubing for the connection to the gauge restrictor or engine. Over a period of time, the vibration will work harden the tubing and cause it to crack and fail.
6.) If the gauge is going to mount under the hood, connect it to the end of the hose or flex tubing. Use some Tie-wraps to secure the gauge and its plumbing to the wiring harness on the driver’s side inner fender.
7.) If the gauge is going to mount in the passenger compartment you get to find a place to run the tubing through the firewall. I suggest that you pick your spot from the inside since that is the area with the most difficult access. Do not run the tubing through the exact same hole as the steering shaft. It will tangle up with the steering shaft and cause major problems.
8.) Install the gauge inside the car in the location of your choosing. Connect the pressure line to the gauge and secure it out of the way of moving parts with Tie-wraps.
9.) Be sure to ground the gauge lighting wire to clean, shiny bare metal. Connect the other wire from the gauge lighting to a light brown/red wire on the radio wiring harness. There are 2 connectors in the radio wiring harness, but only one of them has the light brown/red wire you need for gauge illumination. Solder the gauge lighting wire to the light brown/red wire on the radio harness and cover the soldered joint with heat shrink.
Be sure to use a gauge restrictor fitting in the pressure line going to the gauge. The restrictor will prevent all of the engine's oil supply from ending up on the pavement before you can stop it if the gauge line fails. I had a gauge line rupture, and the restrictor fitting saved my engine from serious damage.