Questions on wiring Ignition/ supplying power to the fuse box
If you are using a new harness, some of that should go through the new fuse panel in the new harness. And it would be a good idea to feed it from a relay to relieve the ignition switch
68 ignition switch:
Top left wire J1-12R. This is the main power INTO the switch. Originally this came from the big welded splice in the black ammeter wire under the dash. NOT FUSED!!
Middle left, J2-16DBL. This is IGN1 or "ignition run." It GOES DEAD during start, and supplies underhood ignition, voltage regulator and originally some smog doo dads on some models It also powers the cluster, such as gauges and brake warning lamp
Bottom........J3-14BR. Brown, this is IGN2 and feeds the coil power during start because as noted above, IGN1 goes dead during start. This is NOT connected to the solenoid and is a separate circuit
Middle right..........S2-18Y----this wire goes out through the bulkhead to one of the bottom two terminals on the starter relay. This is the START wire and activates the relay if the remaining relay terminal is grounded through the neutral safety switch
Bottom right........Q2-12BK. This is powered by the key in either ACC or "RUN." This feeds the ACC buss in the fuse panel
If you are using a new harness, some of that should go through the new fuse panel in the new harness. And it would be a good idea to feed it from a relay to relieve the ignition switch
68 ignition switch:
Top left wire J1-12R. This is the main power INTO the switch. Originally this came from the big welded splice in the black ammeter wire under the dash. NOT FUSED!!
Middle left, J2-16DBL. This is IGN1 or "ignition run." It GOES DEAD during start, and supplies underhood ignition, voltage regulator and originally some smog doo dads on some models It also powers the cluster, such as gauges and brake warning lamp
Bottom........J3-14BR. Brown, this is IGN2 and feeds the coil power during start because as noted above, IGN1 goes dead during start. This is NOT connected to the solenoid and is a separate circuit
Middle right..........S2-18Y----this wire goes out through the bulkhead to one of the bottom two terminals on the starter relay. This is the START wire and activates the relay if the remaining relay terminal is grounded through the neutral safety switch
Bottom right........Q2-12BK. This is powered by the key in either ACC or "RUN." This feeds the ACC buss in the fuse panel
