recommend a relay

Hello all first post here.... I need to use 6 negative triggers to switch 6 positive controls. 

Setting up a auto HVAC system in a show car controlled by the onboard pc. I have the control board, it has negative outputs and I need to have positive. I  was planning on using a pcb set of relays to do this, does this sound like the way to go as it could be engaged for hours at a time.. Thanks

What's the current draw on each?  If the current is low (less then 200mA) you can use PNP transistors.  They will have extremely low current draw when switched on.

If the load is over 200mA nothing you do will work in an engine off situation because any thing over 200mA will drain the battery.

Sorry I should have noted the draw. 5 - 9 amps with key on only.

How would this do:

http://cgi./ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=120438556836

If I read it correctly it will take a negative input and give a positive output.

This is to run the vent actuators for the mode doors and the recirc door.

Thanks for all your help..

That I/O board is set to trigger on + voltage.  You may be able to install a pull up resistor on the input and then use (-) triggers to drop the voltage out.  The downside to this is that the relays will always be energized and the fact they already have an extrememly high base resistor, adding a pull up resistor may not allow enough current to switch the relay.  The alternative would be to replace the NPN transistors with PNP transistors (or see if they offer a PNP board).

I figured that woud be to easy.. Thanks