[dscott]

Jack, this is the way I wire the relay.

The relay terminals have #'s 30, 85, 86,and 87 stamped next to them.

#30 goes to the positive terminal on the fan. Run the other fan wire to ground.

#85 connects to wire 151 or an ignition power wire.

#86 runs to the temp sender.

#87 runs to the circuit breaker power side or direct to the battery.

To hookup the over ride switch, remove wire 161 from the switch and replace it with a ground. The other side of the switch has wire # 157 which you can hookup to terminal #86 on the relay.

Wire #151 and #157 run along the drivers side frame rail close to the upper control arm.

Don