just put the lt1 wiring for my fans and the fans come on but dont come on hard...not pulling enough air...so i grounded the same wire from the relay(brand new painless harness) and when i do the fans kick in hard...dont know why? are the how do the fans ground themselves? how can i fix this problem?

 

how do you have them being grounded now? the stock setup would use the coolant fan switch in the block to supply the ground for the fans.

 

The way the painless is set up is 2 ground wires out of the harness connect to the ground wires on the fan and then of course the power supply...are you talking about the sensor in the water pump??

 

is the painless harness just for the fans or is it part of the engine harness? the factory LT1 setup was done like this:
http://www.shbox.com/1/fan_schematic_1995.jpg

where as the factory third gen setup (dual fans) was done this way:
http://www.austinthirdgen.org/mkport...ine_wiring.gif

you'll need to review the instructions that came with the harness you're using to see how exactly they have the relay set up to switch on the fans

 

its a full engine harness...the way they set it up is you have 2 grounds coming out of the relays and they go to the frounds on the fans and you have to find your own power source so i rans accesory to the battery....they kick on when they are supposed to but wont spin hard enough to cool it down and i know for sure its the ground because i tested it....i thought the ecm sends the signal to groudn the fans so they turn on? in your schematic you showd the looks like the stock is no grounded throught the relay?i have to figure a way around this

 

The PCM sends the ground to the relay(s) which turns the fan(s) on, the fans themselves ground in the harness and have the power going to the relay(s).