Reply to "Cooling Fan diagram, request."

Dennis,

Here's the requested wiring diagram for revising the radiator cooling fan circuit.

This wiring revision will eliminate the problem of the motor continuing to run with the ignition switched off .

Notes:

The pink wires attached to fuses 11 & 12 at the fuse box can be cut & shortened to whatever length is required to reach where ever you decide to mount the new relays. The remainder of the wiring to the oem relays & fan motors is from that moment on dead and can be cleaned up or eliminated.

The drawing for the new relays is based upon the DIN style SPST, normally open (NO), 12 VDC automotive relay such as those manufactured by Hella or Bosch.

You'll need 2 new relays & 2 new fuses to do the job, plus 3 different gages of bulk wiring and the proper connectors. The circuit from the battery connection (between the ammeter & the ignition switch) should be a minimum of 10 gage wire. The individual load circuit for each fan should be a minimum of 12 gage wire. The wires connecting the relays to the temp switches is not as critical, 16 or 18 gage will do in that application.

I apologize for taking so long.

Your friend on the DTBB