Outer Limits 4x4 Board

hey all, chasing electrical gremlims in my mq, originally had a l28 now has 350. last nite stopped for gas, and it wouldnt start, cranked real slow, starter was buzzing. let it sit for 5 tried again, started. going along looked at the gauges and noticed the oil pressure gauge was off the scale, now i have disconnected the oil and temp senders ages ago and fitted aftermarket pod gauges for this so its gota be in the wiring somewhere. i think.
anyone who can help out with diagrams would be great

send us your email and ill send it to you. its too large to post up.