2000 Chevrolet Silverado dash lights

I have checked all the wire in the plug going to the switch with a volt meter and test light
power coming into the switch and going out and no lumination power at the instrument cluster, radio, heater control panel, and this last switch that was installed plunged it in and poof a little smoke rolled out the switch and it did nothing as it had burnt out

No one has worked on the truck before and I have been the only one that has looked thru the wiring now it is a 1 owner truck.
My main question where is the wire from the switch for dash lights tie into as per junction box or module. I have power in and out of the switch no power to the illumination wire on the instrument panels and the fuse holds but over powers the reostat on the interior dimmer light switch and burns out the reostat on the switch. If I can find the j box to see if it is back feeding or shorting to ground

You would not have a picture or wire diagram of that would you

Found it should I have bleed thru on any of the pins when I did a bench test on the block out of the truck I have some pins ohm out that is without any relays or wires attached to the disb block

Anything that would beed thru on the block out of truck on a bench test

I have the distributor relay block out of the truck sitting on my work bench and taking a test meter and homing out the terminals and I have continuatity bleeding thru terminals is this normal or should each terminal be isolated on the relay disturb block

Ohming

It is pretty well explained what I have done or doing
does the block have intergraded circuits in the block casing that can not be split apart or are they all isolated from 1 pin to the next

If the block is bad and back feeding should that not cause the short of my switches or as per say + to - or + to no -