Battery Cutoff Switch wiring

[dgoodhue]

I bought and install a Flaming River battery cuttoff a few years ago. I was in rush when I installed it (going to the track) and it didn't work. I cracked a piston shortly after and never bothered to figure out why. I re wired it up and today I went to start my Syclone and it didn't work like I thought it would.

The switch has 2nd disconnect switch. I expected that when battery switch was disconnected, the 2nd input would also be disconnected. It isn't that way.


Anyone have good ideas to how to make this work? I have it wired upto a my MSD. I could always use it with a resistor to pull it up or down to diasble the MSD, but I can;t imagine that is how they intended for it to work.

 

[mattw]

Re: Battery Cutoff Switch wiring

I think you are supposed to wire the battery and alternator together.. Then put the switch between battery/alternator and the rest of the vehicle. That way when you turn the switch off you are killing all sources of power..

 

[Big Mike]

Re: Battery Cutoff Switch wiring

The Field wire from the alt needs to be cut and run through the switch and back up to the alt otherwise the truck will not shut off when the switch is disconnected. I think it was the brown wire on the alt connector. Also when you do this you loose power going to ecm and it has to re learn it self, what you need to do to avoid this is to run a separate fused wire from bat to ecm power.