Thanks for the replies guys, you are right, the wire isn't yellow, it's pink

sorry about that, I wound up getting the truck towed to my place, I'll go throu (sp?) the underdash wiring later 'cuz I failed to wear safety glasses while I was under my truck and a big piece of crap got in my eye, can't get it out and it's killing me.
BTW, truck has the stock points distributor
Thanks.