Fuel Pump Kill Switch On A 89 B2200 ??

Does anybody know how to put a fuel pump kill switch on a 89 B2200 ?? Im trying to help a friend out.. Thanks ! God bless..

Lazy way, add it to the relay
In the engine bay... LHS (I think, I don't have one) trace to be sure.

The relay is in the engine bay ? I did that on my 85 Corolla but it was next to the ECU..What does LHS mean ?

LHS= left hand side
The easiest way i know is to wire the toggle switch in between the relay's ground terminal and a ground. This way, the toggle switch will last longer and you never worry about an added on 12V wire grounding out later down the road and causing a big headache.

I think so, there's another one beside the fuel pump. (from discussion memory) Someone clear that up for me? lol. I've got a mech fuel pump so can't verify!
Either way...If you've done it on the rolla then it sounds like we have a winner!

drivers side kick panel if its f.i. truck, possibly on the carbed ones too, pop the kickpanel off, if there is a relay there then that will be it, unplug the relay and use a test light to check which one is ignition turn on, turn key on an off and you will see what wire it will be, you will get power through one wire all the time if i remember correctly, once wire is found trace it back down the harness a fair amount of inches, snip and put switch in place

hope that helps