Step 3, Senders:
Water temperature: The InVision Digital Dash must use the included Auto Meter temperature sender. If you are still using the factory engine
management system, you can remove the temp sender that is located in the drivers bank cylinder head. Install the Auto Meter sender, with
the 3/8”NPT adapter bushing. If you used the original sender wire to connect the dash to, you can then cut the original connector off, and
install a ring terminal, or a fork terminal to connect to the Auto Meter sender. Otherwise connect the green wire w white stripe from the new
dash to the sender.
If you are running a small, or big block Chevy V8, or a Chevy inline 6, the included sender and adapter bushings will work. We recommend
whenever possible to install the sender into the cylinder head. On a V8, install the sender into the driver’s bank cylinder head. If you can’t use
this location, you can use the intake manifold temperature sender hole.
If you are running a GM LS based engine, you will need a different sender & adapter due to the LS engine family unique size of 12mm x 1.5.
You will need Auto Meter model number 2259 sender & model number 2277 adapter. This will install into the passenger bank cylinder head,
just past the last exhaust port.
You may now connect the Green w/ white stripe sender wire from the InVision Digital Dash wire harness
.
Oil Pressure: The InVision Digital Dash must use the included Auto Meter pressure sender. If you are still using the factory engine
management system, you will leave the original sender in place behind the intake manifold. You can then install the Auto Meter sender
into the left side of the engine block, just above the oil lter. This will require a ¼”NPT adapter bushing, and if your truck is 4wd, you might
consider relocating the sender via an Auto Meter model 3227 Stainless braided line kit. Between the front driveshaft, and the exhaust
manifold, it is possible to not have enough room for the sender to come straight out. The 3227 hose kit will allow you to mount the sender
on the rewall, or fender well. *If you remote mount the sender, and you do not use a stainless braided hose kit, you will have to nd a way
to ground the body (not the terminal) of the sender with a body ground, in order for it to function. The stainless braided steel line kit will
accomplish this for you.
If you are running a small, or big block Chevy V8, or a Chevy inline 6, the included sender and adapter bushings will work. If you choose
to mount the sender at the rear of the engine on a small block Chevy, near the distributor, you may use a 1-1/2” long, 1/8”NPT pipe nipple
(double male straight) & 1/8”NPT 45 degree elbow tting to raise the sender above the edge of the intake, and tilt out of the way of the
distributor.
If you are running a GM LS based engine, you may need a different adapter due to the LS engine family unique size of 16mm x 1.5 located at
the back of the engine. You will need Auto Meter model number 2268 adapter. Another popular option is to modify the cover plate located just
above the oil lter, and drill & tap a 1/8”NPT hole and install the sender there. Some choose to run braided line, such as Auto Meter model
number 3227, in order to remotely mount the sender away from the exhaust when using this location/method.
Fuel Level: This kit is designed for multiple factory fuel senders. The resistance ranges that are compatible are: 0-90, 240-33, 73-10 (linear),
73-10 (non-linear), 16-158, 40-250, and 0-30 OHM. If you have a fuel sending unit other than those listed you will need to change the fuel
sender.
Speed Sensor/Sender: This sender was not included with the InVision Digital Dash, since many users already have an existing speed
sender due to using a late model drivetrain, or having a pre-existing electric speedometer.
If your truck is modied, and has a transmission with a speedometer cable output, you can use Auto Meter model number 5291 speed sender.
Connect the red wire from the speed sender to the 2 foot red from the InVision Digital Dash wire harness. Connect the black speed sender
wire to the 2 foot black wire from the InVision Digital Dash wire harness. Connect the white speed sender wire to the violet wire from the
InVision Digital Dash wire harness.
If you have a pre-existing 2-wire speed sender that was being used for an electric speedometer (non factory), you may connect one wire of
this speed sender to the 2 foot black wire from the InVision Digital Dash wire harness. Then connect the other wire of the speed sender to the
violet wire from the InVision Digital Dash wire harness. Many times the polarity of the 2 wire speed sender is not polarity sensitive. Though if
you have a black wire, that one is typically ground, and the other (white, tan, violet, green, etc.) is typically signal. If both were the same color,
then it will not matter.
If your truck still uses the factory engine management system, and speed sensor, then see the wiring section for a tip on where to get your
signal from.
Start the engine: Check to make sure you are registering oil pressure, water temperature (as it warms up), volts, fuel level, and RPM. You
will need to calibrate & drive the vehicle for speedometer function. Also check for any leaks at this time.
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