Advance Adapters 713092 - Manual (Page 3)

Gauge Wiring:
The Vortec V8 and the Jeep systems do not “speak the same language”. In
our installations, we retained the stock Jeep computer as well as installed
the new Vortec computer. We retained the stock Jeep sending units and
attached them to the GM block (oil pressure, temperature, and fuel level).
All of them work fine except the tachometer. An aftermarket tachometer
would be the easiest option at this point. Since you are using the stock
sending units, the Jeep computer thinks that the original engine is still send-
ing information. The Jeep service manual identifies the color coded wires
in the harness, we retained the ones for the gauges and the other leads that
are not used from the stock Jeep harness were clipped. Before clipping
wires, you should double check with the service manual and determine
what is “not needed”. (Remember: It is easier to cut wires later than to solder them back together). It is possible to run
the Vortec “check engine” light if you wire it behind the dash and replace the stock Jeep light. Removing the dash and
instrument bezel will give you easy access to the engine light. Redline gauges 661-259-8891 does offer a option for
making the factory tach work.
Take care when soldering and striping wires. It is always best to unplug the battery and also disconnect the plugs from
both the Jeep and Vortec computers. It only takes a minimal amount of voltage on the wrong circuit to damage these
computers. Likewise, only approved test probes should be used. Please read and understand all the warnings printed in
both owners manuals. Make sure to secure the Vortec computer in a place that will be free from dirt, water, and physical
damage. Also place all relays and fuse block out of harms way (inside the tub is best).
Power Steering:
The Jeep and the Vortec Gen III blocks should have matching fittings. In most cases, the stock GM truck pressure line
can be rerouted to work on the Jeep box. The low pressure return line could be any approved oil hose since it sees only
minimal line pressure. The low pressure hose should always be secured with hose clamps. Make sure the hoses have
clearance in the routing to avoid rubbing on anything. Fill the pump reservoir with fluid and replace the cap when all
connections are secure.
Radiator Hoses:
For our conversion we ran to our local auto parts store for hoses. The lower
hose is NAPA P/N 7473. The upper hose is actually two separate hoses spliced
together. A 1/2” hole with pipe thread was tapped into this splice for the stock
TJ temperature sending unit. The two hoses were NAPA P/N 8111 and 8563.
We used our custom Rad-a-Kool radiator for this conversion to make sure cool-
ing would not be an issue. The radiator fit into the stock location on the Jeep TJ.
The Vortec engines recommend a 50/50 mixture of Dex-cool and water.
ADVANCE ADAPTERS INC. P/N 713092
P.O. Box 247, 4320 Aerotech Center Way
Paso Robles, CA 93447
PAGE 3 OF 5
Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 08-18-10
SPECIAL NOTE: The components packaged in this kit have been assembled and machined for specific type of conversions. Modifications to any of the
components will void any possible warranty or return privileges. If you do not fully understand modifications or changes that will be required to complete your conversion,
we strongly recommend that you contact our sales department for more information. This instruction sheet is only to be used for the assembly of Advance Adapter
components. We recommend that a service manual pertaining to your vehicle be obtained for specific torque values, wiring diagrams and other related equipment.
These manuals are normally available at automotive dealerships and parts stores.
VORTEC GEN. III V8 SQ. BOLT
TJ WRANGLER MOTOR MOUNTS