Equus 8243 - 2 Oil Temperature - Manual (Page 2)

Copyright © 2012 IEC. All Rights Reserved.
A. ELECTRICAL OIL PRESSURE (Cont)
NOTE: If the oil pressure warning light stays on when the engine is start-
ed (step 11), or if your vehicle’s original oil pressure sending unit has two
or more lead wires, this method will not work, and a T-fitting adapter (pur-
chased separately) MUST be used to keep your existing oil pressure
sender and warning light operational.
10. Secure lead wires along their route to prevent damage from sharp edges, mov-
ing parts or hot engine components.
11. Reconnect negative (-) battery cable. Start and run engine for approximately 30
seconds. Turn off engine and check gauge installation for leaks. Tighten joints as
needed and retest.
B. ELECTRICAL WATER TEMPERATURE
1. Determine routing for gauge lead wires. Use an existing firewall grommet, or drill
a 3/8" (9.53 mm) hole through firewall to accommodate lead wires. Install a rub-
ber grommet (purchased separately) in hole, and use shrink tubing to protect
lead wires from chaffing or other damage.
2. With engine cold, drain coolant below the level of existing temperature sender (dis-
pose of coolant properly). Remove existing water temperature sender. Install water
temperature sender provided with gauge and tighten securely.
NOTE: Temperature sender must ground to vehicle chassis. Do not use sealing
compound or Teflon tape on sender threads.
3. Crimp or solder ¼" (6.35 mm) female spade connectors (included) on one end
of gauge positive (+), negative (-), and sender (S) wires.
NOTE: Wire must be purchased separately. Use 18-20 AWG stranded copper
wire.
4. Crimp or solder bullet connector (provided) on remaining end of sender wire.
5. Connect lead wires to gauge positive (+), negative (-), and sender (S) spade
posts. Route sender wire through grommet in firewall.
6. Connect negative (-) lead wire to a good electrical chassis ground.
7. Splice positive (+) lead wire into an existing switched (hot only when the ignition
switch is in the “ON” position) positive (+) accessory line in vehicle's fuse panel.
Insulate the splices with electrical tape to prevent shorting.
8. Connect sender lead wire terminal lug to water temperature sender using two
nuts and one washer provided.
9. Secure lead wires along their route to prevent damage from sharp edges, mov-
ing parts or hot engine components.
10. Refill radiator. Reconnect negative (-) battery cable. Start and run engine and
check gauge installation for leaks. Tighten joints as needed and retest.
s
TEMPERATURE
GAUGE SWITCHED +12V
(FUSE BOX)
CHASSIS
GROUND
RED
BLACK
OPTIONAL
GROMMET
WASHER
TERMINAL
LUG
NUT
NUT ELECTRICAL
TEMPERATURE
SENDER
ENGINE
BLOCK
OPTIONAL
ADAPTER
SENDER
WIRE
Figure 5. Electric Water Temperature Gauge Connections
C. FUEL LEVEL GAUGE
Fuel Level Gauges do not include a fuel level sending unit. These gauges are
made to be used in combination with the vehicles existing fuel level sending
unit (not applicable for all vehicle models). Ensure that the gauge matches
vehicle’s fuel level sending unit specifications as described in the “Fuel Gauge
Application Table” below before installation.
■ Fuel Level Gauges utilize a variable resistance sending unit located inside the
fuel tank for operation. The variable resistor in the fuel level sending unit is
designed to change it’s resistance value (higher or lower) whenever the fuel level
in the fuel tank changes. The range and value of the variable resistors that are
used on sending units vary depending on the vehicle manufacturer, vehicle
model and/or year.
■ Three types of fuel level gauges are available, and each gauge is calibrated to
be compatible
only with the manufacturer’s sending units that have the spec-
ifications shown in the “Fuel Gauge Application Table” below.
FUEL GAUGE APPLICATION TABLE
*An optional sending unit that matches the General Motors fuel level gauge is avail-
able through your local distributor (NOT available for Ford, Chrysler or AMC
gauges).
1. Determine routing for gauge lead wires. Use an existing firewall grommet, or drill
a 3/8” (9.53 mm) hole through firewall to accommodate lead wires. Install a rub-
ber grommet (purchased separately) in hole, and use shrink tubing to protect
lead wires from chaffing or other damage.
NOTE: Fuel level gauge lead wires must be purchased separately. Use size 18-
20 AWG stranded copper wire.
2. Crimp or solder ¼" (6.35 mm) female spade connectors (included) on one end
of gauge positive (+), negative (-), and sender (S) wires.
3. Connect lead wires to gauge positive (+), negative (-), and sender (S) spade
posts.
4. Connect negative (-) lead wire to a good bare metal electrical chassis ground.
5. Splice positive lead wire into an existing switched (hot only when the ignition
switch is turned to the “ON” position) positive (+) accessory line in the vehicle’s
fuse panel. Insulate the splices with electrical tape or shrink tubing to prevent
shorting.
6. Route sender wire through grommet in firewall.
7. Connect sender(s) lead wire to output or ‘S’ post on vehicle’s existing fuel level
sender.
8. Secure lead wires along their route to prevent damage from sharp edges, moving
parts or hot engine components. Reconnect negative (-) battery cable. Turn ignition
on and verify that fuel level gauge indicates proper fuel level.
■ To determine a vehicle’s fuel level sending unit specifications, discon-
nect the vehicle’s sending unit wire from the vehicle’s Fuel Gauge.
Measure the resistance between the sending unit and chassis ground
when the fuel tank is empty, and again when the fuel tank is full. Match
the results obtained to the specifications listed below
Sender Range Specifications (±10 Ohms)
Gauge Type When empty, must read When full, must read
General Motors* 0 Ohms 90 Ohms
Ford and Chrysler 73 Ohms 10 Ohms
AMC and S/W 240 Ohms 33 Ohms
s
FUEL LEVEL
GAUGE
SWITCHED +12V
(FUSE BOX)
CHASSIS
GROUND
RED
BLACK
OPTIONAL
GROMMET
FUEL LEVEL
SENDER
SENDER
WIRE
Figure 6. Fuel Level Gauge Connections
The Manufacturer warrants to the original purchaser that this unit is free of defects in materials and work-
manship under normal use and maintenance for a period of one (1) year from the date of original pur-
chase. If the unit fails within the one (1) year period, it will be repaired or replaced, at the Manufacturer’s
option, at no charge, when returned prepaid to the Service Center with Proof of Purchase. The sales
receipt may be used for this purpose. Installation labor is not covered under this warranty. All replacement
parts, whether new or remanufactured, assume as their warranty period only the remaining time of this
warranty. This warranty does not apply to damage caused by improper use, accident, abuse, improper
voltage, service, fire, flood, lightning, or other acts of God, or if the product was altered or repaired by any-
one other than the Manufacturer’s Service Center. The Manufacturer, under no circumstances shall be
liable for any consequential damages for breach of any written warranty of this unit. This warranty gives
you specific legal rights, and you may also have rights, which vary from state to state. This manual is copy-
righted with all rights reserved. No portion of this document may be copied or reproduced by any means
without the express written permission of the Manufacturer. THIS WARRANTY IS NOT TRANSFERABLE.
For service, send via U.P.S. (if possible) prepaid to Manufacturer. Allow 3-4 weeks for service/repair. If you have any questions, require technical support or information on UPDATES and OPTIONAL ACCES-
SORIES, please contact your local store, distributor or the Service Center.
USA & Canada:
(800) 544-4124 (6:00 AM-6:00 PM, Monday-Saturday PST)
All others: (714) 241-6802 (6:00 AM-6:00 PM, Monday-Saturday PST)
FAX: (714) 432-7511 (24 hr.)
Web: www.equus.com
Technical Service Center
17352 Von Karman Ave.
Irvine, CA 92614
LIMITED ONE YEAR WARRANTY AND SERVICE PROCEDURES