1990 Chevy k5 Blazerng diagram? | Yahoo Answers 1990 Chevy k5 Blazer.wiring diagram? I think there is a possible wiring problem in the fuel pump dept. Its dumping way too much fuel in and I would like to check out a diagram to see if thats the prob.ody??? Answer Save. 2 Answers. Relevance. mdk68gto, ase certified m tech. [DIAGRAM] 1990 Chevy K5 Blazer Wiring Diagram FULL Version 1990 Chevy K5 Blazer Wiring Diagram. Posted by MIRRYLUANGRATH on . 2020-10-17 1990 Chevy K5 Blazer Wiring Diagram SOLVED: 1990 Kawasaki KH125-K5 wiring diagram - Fixya No power to the fuel pump on a 1990 K5 blazer need a wiring diagram for that model to trace the power wire back from the fuel pump. CHECK FUSE + RELAY TO FUEL PUMP THEY CHECK OUT GOOD HAVE PCM PROBLEMS. MAKE SURE PCM FUSE IS GOOD CAN BUY A HAYNES REPAIR MANUAL HAS ALL OF YOUR ELECTRICAL DIAGRAMS. [DIAGRAM] 1990 K5 Blazer Wiring Diagram FULL Version HD 1990 K5 Blazer Wiring Diagram. Wiring Diagram For 85 K5 Blazer. 86 Chevy Blazer Rear Window Wiring Mechanicadvice. 72 K5 Blazer Wiring Problem. 72 K5 Blazer Wiring Problem. Pulse Wiper Schematic For 88 K5 - Blazer Forum. Need A Wiring Diagram Project Is An 84 K5 But I Suspect. Search motor wiring harness Blazer K5 89 -90 Hi guys , My K5 was modified in carb by an old owner in the 90's , and I try to install a TBI system my K5 is a 1989 modele , I have all the parts from a K5 year 1990 , but I have some electrical problems :shocked: and questions ??? anyone have the diagram of the electrical wiring harness for Blazer K5 year 89 and 90 ? SOLVED: No power to the fuel pump on a 1990 K5 - Fixya No power to the fuel pump on a 1990 K5 blazer need a wiring diagram for that model to trace the power wire back from the fuel pump Posted by blazerboy26 on Nov 10, 2009 Want Answer 0 89 K5 Blazer Wiring Diagram | autocardesign 89 K5 Blazer Wiring Diagram– wiring diagram is a simplified pleasing pictorial representation of an electrical circuit shows the components of the circuit as simplified shapes, and the aptitude and signal friends surrounded by the devices.