[grandville455]

Originally Posted by HWYSTR455

Try this: Terminate the cable that goes from the alt to the battery on a post under the hood, and run power for the relays for the fans to that post. I suspect you might have that already, just make sure all are on the same post. I used a ford sol as the common point, it works well.

Yup, one-wires are not the way to go, you can read all the why and why not at the MAD site, it all still applies. They work, just not optimal. They can spike too.

The opti yellow tops are what I run, just remember you need a 'smart' charger, and any short whatsoever cooks cells.

.

So run another wire from the back of the ALT to a ford solenoid and then run my power wires (#30 on relay)for fan relays to it instead of from a wire under dash correct? Or am I taking the cable off the back of the alt and that goes to one side of solenoid, then the cable that goes from alt to other side of solenoid along with the 2 # 30 power wires for relays? I have a smart charger i bought a couple of years ago

[HWYSTR455]

Ok, so the power feed to the fan relays are the #30 terminal. And do you have a remote starter solenoid? Like a Ford solenoid? It would be good if you use one, since it prevents the power wire to the starter from being live, only gets power when cranking.

So, the power lead to the sol from the battery is where you gang your accessory leads, and the alt lead. Not a separate wire from the alt, the only wire.

The power that feeds the relays for the fans right now is coming from the fuse box under the dash? If so, that's part or all of the problem.

Excuse my crappy diagram I pulled from the other thread, I did it in a hurry, but should give you an idea.

(that's an 8g wire for each bank of relays, not just one 8g)

.