I installed it yesterday on the low-speed fan wire (brown/orange) and through an adjustable flex-a-lite controller. I also have the power wire just stuck in one of the spare relay switched plugs on the fuse box. I put a 25 amp fuse in line. Is this good or to much or to little? Also, the guy at Napa is saying I need it through a relay now? If so, what size? I have searched and found no fuse size or relay talk other than guys going to the high-speed side and needing more. Thanks!

Aaron

 

It may pop that one a bit too often. I think they draw about 40 amps on startup. Someone else can jump in here and enlighten us.

 

I had a 25 on my low side and never an issue and I put a 60 on the high side

 

the lowside has an inital startup surge of about 40 amps. The highside surge is about 80 amps. To be safe use a 30a on lowside, and 60a on highside

 

i have a 30a relay on mine with 30a fuse never had a problem running low side on a 3.0L fan