three amigos plus one

[primitivedave]

ok here we go,
check engine light constantly....came up as a bank 2 o2 replaced it threw more codes after.....
three amigos plus e-brake light appear only when headlights ,brites, horn are used or turned on.....when brites are engadged the wipers go on till brites are turned off...
also the wipers wont respond when the headlights are on they will go on, but wont go off
when the engine is restarted the warning lights go out...
when the three amigo lights are off the abs works
when the lights are on no abs..... could this be a short in the collum?
or where do all these things intersect?bad ground?
cleaned ground behind airbox dialectic grease no help.....checked brake fluid cleaned all electrical fittings i could find..... wish i would have taken a picture of the driveshaft universal piece i found stuck in the firewall.....
take it last owner had some driveshaft problems.....

 

[KyleT]

check the ground behind the fuse box. mine was loose and it was doing some really funky things. that is one of the grounds that goes to the PCM, SLABS, BCU ect...

edit, sounds like the BCM (body control module is acting up) check the ground and report back. if there is an issue in that, it can throw some weird stuff through the CAN network...

 

[primitivedave]

drivers side below sterring wheel?behindbank?

 

[KyleT]

under hood fuse box. on the fenderwell pass. side

 

[primitivedave]

grounds clean tight cool.. battery clean....everything ok.....no change

 

[Roach]

May want to check the fuse box under the steering column. Many earlier D II's had an issue w/ water ingress to the point of corrosion and failure. There was a thread either here or on LRR about this...

 

[primitivedave]

May want to check the fuse box under the steering column. Many earlier D II's had an issue w/ water ingress to the point of corrosion and failure. There was a thread either here or on LRR about this...

every thing looks in order
clean as a whistle.....
one red /black wire unhooked was jumped into fuse box had no effect... maybe old satalite rad power or something.....all grounds appear to be clean and in order.....could someone have put wrong relay in box ect?
duh there are soooo many wires going blind........

 

[primitivedave]

check the ground behind the fuse box. mine was loose and it was doing some really funky things. that is one of the grounds that goes to the PCM, SLABS, BCU ect...

edit, sounds like the BCM (body control module is acting up) check the ground and report back. if there is an issue in that, it can throw some weird stuff through the CAN network...

any way to test the body control unit