68 Roadrunner signal lights

[Gregg DeGeorge]

Hello trying to get my signal lights working signal light switch replaced also replaced wires running from flasher the black that goes to the last fuse and the red that goes to switch ,I have No power to flasher ???Brake lights ,parking lights work ,Should there be power at the last fuse in block
??If I jump flasher with hot wire were the black wire goes rear signals work from switch,not sure where the power is surprise to come from thanks Gregh

 

[miller]

Do you have a wiring diagram for the car? Turn signal wiring can be complicated, without one!

Then, trace out the wires, to locate the power source. Yeah, should come off the fuse box, make sure fuse is good.

 

[Nacho-RT74]

ok... lets see, check at the flasher plug first. One wire must be hot in acc/run if turnings and allways hot if hazzards

Turning:
If Black wire ( weel I recall black on my car ) is hot, it becomes red on the other wire. Once Flasher is conected, it jumps out the power to red wire up to column switch. Must remain hot up to column. It will blink JUST when column switch is activated to either side, but while swicth is centered, the red wire down the column will remain allways hot, not blinking

Hazzard:
same than above. But the output wire becomes pink up to cluster switch and must be hot too ( allways, no need for keyed power ). Untill hazzard switch is not activated, will remain hot. Once activated it will blink all 4 corners, white to both rears arriving to column first, light green and tan to fronts. White wire signal becomes on dark green and dark brown to feed each of the sides of rears.

 

[Shorthorse]

http://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunnerA.JPG
http://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunnerB.JPG

http://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunneFull.pdf

It appears that the black wire is a switched power lead that originates at the ignition switch, "ACC" ternimal.

 

[Gregg DeGeorge]

http://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunnerA.JPG
http://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunnerB.JPG

http://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunneFull.pdf

It appears that the black wire is a switched power lead that originates at the ignition switch, "ACC" ternimal.

Thanks I’ll give it another shot tonight b
Signel lights driving me nuts ,I’ve had Corbett that were easer

 

[Nacho-RT74]

do you have wipers ? it seems the wire feeding the fasher is spliced on to same wipers splice and some others and is not even fused!!!

Ign switch Q2-12BK derivates on to D1-18BK ( source for turnings ) after a splice. No fuse on the run, neither for wipers. AFTER THE SPLICE runs to Fuse box on Q2A-14BK, but turnings and wipers already sourced way before

 

[Nacho-RT74]

Is amazing how some diagrams hare able to confuse everything... Both turning flasher wires look like they are crossing over!!!

 

[Shorthorse]

do you have wipers ? it seems the wire feeding the fasher is spliced on to same wipers splice and some others and is not even fused!!!

After your post I took a closer look at that circuit on both sets of drawings. Wow, I guess the fusable link was good enough for the engineers that designed it.

 

[Gregg DeGeorge]

Thanks my diegram off of moparts showed the black wire from flasher going to last fuse on fuse block and the red going to signal light junction plug

 

[Gregg DeGeorge]

Yes wipers work on one speed

 

[Nacho-RT74]

Thanks my diegram off of moparts showed the black wire from flasher going to last fuse on fuse block and the red going to signal light junction plug

I haven't checked really those, but THATS WHY I never trust on MyMoparts posted diagrams. They are helpfull, BUT stll must be picky with them

Yes wipers work on one speed

that must be a diff deal

 

[Nacho-RT74]

Thanks my diegram off of moparts showed the black wire from flasher going to last fuse on fuse block and the red going to signal light junction plug

just checked, and not, it shows exactly same than the FSM ( pdf ) posted by Shorthose. is just that you are missreading it. If you track it, the splice reachs the acc igg source and the fuse box ends is to feeds the acc buss bar, but not the fuse output. The power output comes from ign switch

 

[miller]

Did I say confusing?

Almost funny, how the wiring is tied in, wire colors change in mid air, to make all this stuff work.

I looked over the mymopar diagrams (seem the same in the service manuals), at the 'A' sheet. Only shows a two wire connector for the turn signals, one wire changing from black to pink. Trace that pink wire, goes to the second fuse in the block...power source to the turn signal switch. Power feed to that second fuse is red w/tracer.
Use a test light, to see if your getting power to that fuse, and out from it to the pink wires. (Might have to turn the key on, to get power to it.)

Service manual...might be a different wiring diagram for the turn signal switch itself...maybe in steering. One step at a time!

 

[Nacho-RT74]

Sorry, but I have no idea where are you looking at! A diagram shows red running to column switch and black to the ACC splice coming from ign.

Pink is constant battery and it should be hazzards

 

[Nacho-RT74]

Here is the B section ilustrating the hazzard system ( and some stuff more )

Red trace comes from ammeter ( batt/alt power ) splice

must say the brake pedal switch white wire runs and splice into the hazzard switch and colum switch ( cav 7 on diagram ) network just to simplify the switch. So on this way, just one output made to rears on hazzard switch which the column switch takes care to spread out to both rear sides.

This is why when you turn on Hazzards you stll can press brakes and will light on not blinking. This changed on 70s and lates because hazzard switch was built into the column switch.

 

[miller]

Sorry, but I have no idea where are you looking at!

Aw, heck...had one eye closed. Looking at wrong thing.
Thanks, Nacho!

 

[Nacho-RT74]

LOL... yes noticed when you mentioned the PINK wire deal, thats why I preffered to color these diagrams on the respectivelly sections, because this could make everything more confusing. Specially for the OP

 

[miller]

LOL... yes noticed when you mentioned the PINK wire deal

Yep, agree.
Just looking at the signal connector, upper white wire to the stoplight switch. But, other side of the switch (yeah, know it's not constant), changes to pink, through emergency flasher, to the second fuse. Bottom line is, seems he's lost power to the signal switch.
Sorry if I'm confusing the OP! Test light should tell the story.

 

[Gregg DeGeorge]

LOL... yes noticed when you mentioned the PINK wire deal, thats why I preffered to color these diagrams on the respectivelly sections, because this could make everything more confusing. Specially for the OP

Thanks for all your feedback still trying to get it sorted out ,don’t remember seeing that pink wire ,Thanks again

 

[Nacho-RT74]

You are working on signal lights which per my understanding would be the turning ones. Pink is hazzards and you haven't mentioned anything yet about hazzards