When I press in the clutch and turn the key my truck will not start I have to use the interlock button to start the truck does anybody know what I can do to fix it is a 86.5 nissan extcab 4x4.Thank you for responding

Might be a clutch relay issue. Never had that problem. Just an idea

Keep things simple. Look at the switch at the top of the clutch peddle. Is the clutch peddled properly actuating the switch?

these hardbodies have shitty ignitions take the plastic cover off round the steeringwheel.... their is a round white connector on the backside of the igniton switch... the clips on it are junk and the wiggle loose and give it ashit connection.... all the hardbodies ive had have dont same thing....just bought a pathy hope it doesnt do it...

just wiglle it that what i did last time it happen on my one i actually had to use silicone and zip ties to hold it tight...hope this helps duder