Got the wires crossed, need to know what nu goes where,i dont know which wire goes where.

pull wires loose one at a time carefully so you dont get shocked..until you find the one or 2 that do not change the way it runs..then switch them and see if it runs better..if you pull more than one at a time.. the motor will stall..

you need to put engine on top ded center and lok where rotar buton is pointing and then follow the leads clockwise 18536724

More important than the length is the routing of the wires to reduce chances of cross-feeding of the ignition pulse into another wire.
Don't know if any place shows the routing of the plug wires.. You may need to look at another engine like yours to see how the wires are routed and which length wire goes where. Good luck.

crossed wires where the conection to the heater for the window is sounds like he conected the wires wrong undo them and switch them around or follow the wires to see witch wire comes from the radio to the control panel where the buttons to tur the radio and set the defrost is ad see if the wires are crossed or in the wrong places if that dont work then it might need grounded hope that works for you

One of those wires should go to your engine block.

Give me the year, model and engine size. I'll see if I can help you.

locking down on top of dist cap, you have the stickout where the wires plug into the bottom upper part of the cap standing in front of the car the #1 wire goes to the left of the stickout (TO THE FRONT OF THE CAR) then from #1 go counterclockwise aas follows 8-4-6-3-5-7-2 that is the wire position and the firing order.(18463572) The #1 plug is on the front bank (1357) the rear bank i(2468) the above info applies to a front wheel drive 4.9 cadillac v/8 NOT A CONCOURS MODEL)

hi you can try this site for some help..
http://www.blazerforum.com/forum/
hope that helps

the coil pack should be marked by each post which cylinder each wire goes to or may have a diagram on the coil.

check for a bad ground wire