I have some Sun gauges that I want to put in my car.

Amp
Water Temp
Tach
Oil Pressure

I want know how to wire them up they do not have a box.
Any ideas ?

Are the gauges mechanical or electric?

First step, figure out where you want to mount the gauges. Then, make up a little wiring harness for the lighting circuit. Tie this into the "LPS" terminal on your fuse panel.

On the Sun tach, I believe that red is +12V, blue is lighting, green is to the coil and black is ground (not sure on the ground color). Tie the +12V into the "IGN" terminal. If you other gauges are electric, make up a little harness and tie them into the "IGN" terminal as well.

You ammeter will need to be connected into the main charging wire. This makes for a very long run of wire into the car and back out. I prefer a voltmeter, but if you stick with the ammeter, run a heavy enough wire, 10ga. at least.

Soldering is better than crimping. You can use a trailer plug or two if you want to make your harness service removable. Zip tie everything so it's neat.

I have some Sun gauges that I want to put in my car.

Amp
Water Temp
Tach
Oil Pressure

I want know how to wire them up they do not have a box.
Any ideas ?

Don't bother with the amp gauge. Its the full flow type and they are more trouble than their worth. Get a volt gauge. You can download Sun gauge instuctions here
http://www.sunpro.com/user_manuals.php

Are the gauges mechanical or electric?

First step, figure out where you want to mount the gauges. Then, make up a little wiring harness for the lighting circuit. Tie this into the "LPS" terminal on your fuse panel.

On the Sun tach, I believe that red is +12V, blue is lighting, green is to the coil and black is ground (not sure on the ground color). Tie the +12V into the "IGN" terminal. If you other gauges are electric, make up a little harness and tie them into the "IGN" terminal as well.

You ammeter will need to be connected into the main charging wire. This makes for a very long run of wire into the car and back out. I prefer a voltmeter, but if you stick with the ammeter, run a heavy enough wire, 10ga. at least.

Soldering is better than crimping. You can use a trailer plug or two if you want to make your harness service removable. Zip tie everything so it's neat.

When you say to the coil, what do you mean by that ?

The tach connects to the negative terminal of the coil, assuming no ignition box. This is where it picks up the engine RPM signal.

The tach connects to the negative terminal of the coil, assuming no ignition box. This is where it picks up the engine RPM signal.


roger thanks, and what about the IGN wire ?

It's the "IGN" spade terminal in the fuse panel. What this is a 12V source that is on when the car's ignition is turned on. The tach requires a power source to operate and this is where you connect it so that it turns on and off with the rest of the car's electrics.

So in summary, the tach needs three wires to work. A power source, a ground, and a signal source. (The fourth wire is the the light, and the light "shares" the ground wire.)

It's the "IGN" spade terminal in the fuse panel. What this is a 12V source that is on when the car's ignition is turned on. The tach requires a power source to operate and this is where you connect it so that it turns on and off with the rest of the car's electrics.

So in summary, the tach needs three wires to work. A power source, a ground, and a signal source. (The fourth wire is the the light, and the light "shares" the ground wire.)


Thank you sir !