Outer Limits 4x4 Board

I have a 180 amp pirahna solenoid that i will be putting in my new car. I dropped into their shop the other day and asked a few questions about system, including whether it was possible to link batteries through their solenoid alah several other systems available on the market. They straight out said no, however i have read and heard it being done through various channels, both commercial print and on the web.

So, are people doing this simply running another lead between batteries with a big constant duty solenoid and switching this on whilst switching off the pirahna isolator... or is there an easier method.


PM if you dont want to give away and secrets.

I dont want this to turn into a pissing contest about different types of isolators either please. I have also searched, but if i missed a thread please correct me.

or is there an easier method.

mount the solenoid inside the nearest dumpster.

trackbandit wrote:

or is there an easier method.

mount the solenoid inside the nearest dumpster.

Be sure it is fully extinguished first

wouldn'tit just be a case of connecting the third batt to the aux batt it'd will take longer to charge up but would still charge them both up.

also thissystem overheats or something , the reason for the other replies.

zagan wrote:wouldn'tit just be a case of connecting the third batt to the aux batt it'd will take longer to charge up but would still charge them both up.

also thissystem overheats or something , the reason for the other replies.

Not sure exactly what the problem is, but i've seen a number of them turn the internals to crap; i.e. charcoal (and heard plenty of similar stories).

you can buy a 500 amp continuos duty silver contact solenoid from a auto elec for about 50 bucks and connect asmany batteries as you like, also been winching useing it on the second battery for five years no probs

zagan wrote:wouldn'tit just be a case of connecting the third batt to the aux batt it'd will take longer to charge up but would still charge them both up.

also thissystem overheats or something , the reason for the other replies.

Yes that is possible... but not what im aiming to do... be able to draw power off the second battery through the solenoid for a big winch etc.