That should be fine it's worked for me on the first two trucks I put cablights on
Dont waste your money on that cheap kit. Just go to the junk yard and buy the stock harness. And buy these lights Cab Marker Light Yellow, 25760Y, Truck-Lite - Ryder Fleet ProductsI am adding these lights http://www.amazon.com/gp/product/B000JJJ5Q2/ref=oh_details_o02_s00_i00 to my '96 cclb. The truck didn't have the lights to begin with, but I really like the look of them. I decided to go with stock look lights. The kit is a very inexpensive one, and uses crimp-connect wiring harnesses, which aren't great, but I didn't feel like shelling out the dough for a factory one.
I'm wondering if I can just add this onto the parking light circuit, using a jumper wire. I want to know if I'm going to draw too much current on the factory parking light wire if I power it from there, or whether I should use a relay using the switched parking light wire as the turn-on lead and a separate power wire circuit. I don't honestly know the wattage of the bulbs, but they are conventional, not LED, so they'll draw the same as the stock units would have.