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anyone knoe the amp draw of a oem 97+ elec fan, im hooking mine up to a toggle switch to have complete control over it and gonna have a inline fuse, was thinking 15 amp
The stock fuse in the PDC is 40A, but I'd guess actual draw is around 15-20A. I wired up a switch and relay to run mine, on a 25A fuse. It hasn't cooked a fuse yet.
Thing is, there is a huge inrush current and the factry does not use "slo-blo" fuses so the fuse must be sized to accept the instantaneous current. So, the 40A fuse.
There are threads that show how to wire in manual control over the factory relay. Not a difficult task as tasks go. Cleaner installation also.
I just did the same thing on my 95 and used the same size fuse that was in the factory PDC in my aux block. Can't recall the size atm... I've used the fan a handful of times and haven't had an issue yet.
I put a 97 aux fan in my 93. It's supposed to have a 40 amp fuse, but the biggest one I could fit in the fuse block was a 30 amp due to the physical size of the fuse slot. I've had no problems for the last 8 months even in the hot weather with the AC running.
You just tryin to add control to the existing? I ran a switch to the fan relay. 14 gauge hot wire from Fuse Block : Accessory->Switch->hot on relay. When I flip the switch it kicks on the relay & fan comes on. Aside from the minor bit of wire I ran, rest is stock. Fan still comes on by itself if required & I don't have the switch on already. This is on my '87