Mark, yup, a big wire from the main battery was the plan.
Thanks!
Miguel

I have not failed. I've just found 10,000 ways that won't work.
  - Thomas A. Edison

On Sun, Apr 11, 2010 at 12:54 PM, mark drillock <mdrillock@cox.net> wrote:
> Either way works for the blue wire relay trigger hookup with 2 small relays.
> I prefer to let the blue wire control just the stock relay and then use the
> output of that relay to trigger the second one because I often use larger
> sizes of second relay. The stock fridge and aux battery relays are a small
> type that draw very little current from the blue trigger wire but bigger
> relays draw a lot more from it than was intended.
>
> The main aux battery issue is where the charging power for the aux battery
> will come from. Using the existing 12 volt power wire to the fridge relay to
> also charge an aux battery just does not work well. It can work to keep a
> charge on it until you camp for a while but once you drain the aux battery
> that shared power wire won't charge it back up in a reasonable time,
> particularly if the fridge is also running and/or the headlights are on. You
> need a separate power wire from the main battery to the aux battery relay to
> re-charge a drained aux battery consistently.
>
> Mark
>
>
> miguel pacheco wrote:
>>
>> That bit about the factory relay being wired to the fuse panel makes
>> sense to me Mark. So this second relay would get it's signal from
>> terminal 87 on the factory relay? Or could the blue wire energize two
>> relays or is it too weak?
>> Miguel
>>
>> I have not failed. I've just found 10,000 ways that won't work.
>>   - Thomas A. Edison
>>
>>
>>
>