do you mind showing what you did?
Well I don’t really have any pictures but I can give you a summary of what I did.
To start I got a 3 position rocker switch (on - off - on) that is back lit with led’s off amazon. Then I ran two signal wires through the fire wall. Hooked the switch to a key switch lead off of the gauge harness. The double pole double throw rocker switch had 7 pins. So I put jumpers across the pin sets at the top and bottom to illuminate the leds upon completion of the circuit and a ground run from pin #7 to the body. So I ended up with switch key switch voltage as my signal to my relays. Then hooked the signal wires to a relay a piece, 2 speeds, 2 relays. Then soldered up leads from the battery to the relays with inline ATC style fuses. Made a ground leads for the relays as well. Then finally I made a output lead from the relays to the high and low pins on the fan. The fan is a 620118. It has 3 pins low,high,ground. So once I had the leads hooked to the fan with female spade connectors(admittedly not the best but I couldn’t find the exact plug and pig tail locally, will be ordering the correct connector and pig tail this winter) I ran a ground to the battery. Checked one more time over my wiring, grabbed my fire extinguisher and gave it the ole college try.
I Have to manually switch my fans, which to some may be an issue but I went with a back lit switch for a reason and it’s been that way the whole time I’ve owned the car. I may consider changing to a thermostatic switch but I have all aftermarket gauges and put water and oil pressure in places I will be able to easily keep an eye on them.
I believe the relays are 40 or 45 amp. The inline fuses are 30 amp. Used 10 gauge wire for pretty much everything but the grounds and the signal wires.