troubleshoot my lights - Hight beam wire at guage

[RootBreaker]

ok so it seems..
from here - gotta give credit where I find it..

http://67-72chevytrucks.com/vboard/...896e8d4c6ae3da80b7cfba1&p=4546705&postcount=3

@hatzie

Wire Color Table compiled from the 73-87 wiring diagrams in our sister forum.

GM
CKT...DESCRIPTION.........WIRE COLOR
8......Cluster Lamps.........GRAY
11.....High Beam Lamp.....LIGHT BLUE
14.....Left Turn..............LIGHT BLUE
15.....Right Turn.............DARK BLUE
25.....Gen Telltale...........BROWN
30.....Fuel Gauge............PINK
31.....Oil Sender.............TAN
33.....Brake Lamp...........TAN/WHITE
35.....Temp Sender.........DK GRN
39.....Ignition Power.......PINK/BLACK
150...Grounds................BLACK
237...Seat Belt Warning...PINK/WHITE
931...Electric Choke........DARK BLUE
939...IGN Generator........ORANGE (idiot light clusters only)



that is saying light blue... gonna go out side in the rain and look.

 

[RootBreaker]

nope.. wrong.. i traced one side to another bulb so ground... other goes to green.

the wire nut is wires that go nowhere that i grouped together many years ago. it shows green so ill have to research that up.

 

[sweetk30]

ya i dont know about that list .

i just pinned out the oil pressure and water temp at the dash plug for the blazer build i am doing . and i used my 30ft test lead to the wire under the hood on the engine harness and them my d.v.o.m meter on beep test and my oil pressure wire was blue and water temp was green . there reading fine now on the brand new autometer gauges . mid 80's truck i am playing with .

 

[RootBreaker]

so from the manual.. it seems it is simple...
they supply voltage from high beam switch (shown on floor but I have on column) up to the dash. will have to look for this wire. else I will wait for the rain to stop, go to the junkyard and trace the wire on that white truck I'm going to take the rear wiring out of. should be able to follow the wire...
truck is apart.