Where can i get some and what size r they?

I have been trying to get my starter to work well but its been pretty intermentently working and not. Sometimes will work fine and other times just click and not do anything. But I figured when I add a power from the starter to the battry (the small wire) that it will always work. But even when Its not working the starter does get a signal power, but i would guess its not getting enof amps. What do you guys think the problem could be? and how to fix it! Thanks!!

Great guy to deal with. Had several smooth transaction staring long ago when I sent him a pair of injectors that didn't work for him and he was gracious enough to let me send him other parts to fix the deal

trying to clean out the garage, no need to hang onto this stuff ive decided.   87 trans, shifted good when pulled from car for an 89. good working order-$100   stock manifold, port matched to fel pro gasket, also took quite a bt of time smoothing all the casting flash out of runners, stress relieved, good working order was replaced by custom header and turbo setup. sandblasted and coated with 2000 degree flat black. $50.,   stock turbo heat shield good shape, sandblasted and coated same paint as