Parking Lights

I'm installing an Autopage RS-750lcd on a 1997 GMC yukon 2-door...

The RS-750lcd has a 10A, 12V output for the parking light flash option.  I would like to add a 30A Relay so that I don't exceed this 10A ceiling if my boat trailer is hooked up.  My question is:

1. Should I consider this, i.e. would a trailer overload this circuit?

2.  What would the relay schematic be for this setup?

3.  Can I just tap the parking light wire at the headlight switch as opposed to cutting the wire and making one lead 30 and the other 87a?

Thanks,

--JJ

Using a relay will only isolate the CPU of RS750 from the parking light circuit. You can use the realy but it will not be necessary. If you do want to as a precaution you can use this relay configuration:

Positive to Positive Relay Diagram

This will isolate the parking light wire of the RS750 from the parking light circuit of the Chevy.

So I can just tap the parking light wire (without cutting it) with the 10A output from the RS-750 and I should be in business?

Thanks,

--JJ

In other words, add an inline fuse to the output of the RS-750?

--JJ