Dual electric fan wiring.

[Crackedback]

Lots of ways to skin a cat...

Those controllers are pretty cool deals.

Have you done a bulkhead wire around solution?

If you plan on running the fans primarily when the car is off, the battery is a good spot to pull power. If the idea is for them to run when the engine is running, pulling power off the alternator charge stud is the place to go. With a sufficiently sized wire around solution, either point is a decent spot to pull power. I still prefer alt charge stud.

Without a wire around, you are taxing the bulkhead with your fan amp load = BAD!

 

[2059]

I landed on the Derale controller also. in the '64, I run two High Volume Derale Pushers and a Derale Trans Cooler (Electric) So far very happy with their performance.

 

[747mopar]

Lots of ways to skin a cat...

Those controllers are pretty cool deals.

Have you done a bulkhead wire around solution?

If you plan on running the fans primarily when the car is off, the battery is a good spot to pull power. If the idea is for them to run when the engine is running, pulling power off the alternator charge stud is the place to go. With a sufficiently sized wire around solution, either point is a decent spot to pull power. I still prefer alt charge stud.

Without a wire around, you are taxing the bulkhead with your fan amp load = BAD!

No bulkhead here, pulled the whole harness out, trashed it, welded all the holes shut, moved battery to the trunk and started over. I have everything tucked away and hidden out of sight but my thoughts on how to wire it is as you mentioned. My plan is to run all the wiring down the core support along the frame and back up the front of the motor to the alt stud. I see no sense in running a fan when there's no flow going threw the radiator so yes only on while running.

- - - Updated - - -

I landed on the Derale controller also. in the '64, I run two High Volume Derale Pushers and a Derale Trans Cooler (Electric) So far very happy with their performance.

Good to know.

 

[Crackedback]

That's good then with a better charging system approach as long as it doesn't mirror the mopar style flow path. Straight from alt charge stud to battery positive, or relatively straight, no ammeter garbage.

 

[747mopar]

No ammeter, voltmeter instead and a straight shot to the battery.

 

[747mopar]

Finally finished it and took it out for a drive, the fan controller is pretty slick. I have the manual trigger wire crimped in with the binary switch on the A/C so anytime the pump is activated 1 fan comes on, works nicely! Playing with the temp on and off setting shows just how much air these fans pull, I let it idle long enough that the temp came up to 200 degrees but as soon as I dialed the setting back you could watch the temps drop quick. Right now 1 fan comes on at 185 and the 2nd at 200 at which point the temp drops like a rock. Very happy with it.