Turn signel problem

[strictlypersonl]

Switch the entire parking light assemblies from side to side.

[DanEC]

Well, I hoped I would have better news to report but alas that is not the case.

I removed both light units, checked them for same orientation of green and red wires with deep and shallow recesses in the sockets. They were opposite of each other so I switched the leads around on one so that they were exactly the same. When I installed them and turned on the parking lights one of them (driver side) was burning the signal filiment. So I pulled the bulb on that one out and switched the contacts 180 deg (back like they were) and reinstalled. The park lights were then burning on both. I tried the turn signals and the driver side again worked fine and the pass side did not work at the front - no change.

I pulled the bulbs and with the park lights on only (no signals on) I checked voltage at the contacts in the socket. I got 12 volts on the park light contact and 0 volts on the signal contact on the driver side. I went to the pass side and I get 12 volts on both contacts (???). I noticed this yesterday. Why I'm getting 12 volts on the signal contact and the bulb signal filiment doesn't light up probably has some electrical explanation but it's beyond me.

Next I went through connections Steering column to harness; connection 72 to 71; connection 70 to 74; and connection 27 to 54. I wrote down any inconsistencies I could find like in 70 to 74 a brown wire connects to a purple wire. On 72 to 71 there is a light purple wire in 72 for which there isn't any corresponding wire on the 71 side. Apparently this is used for the Triumph column. After checking everything with the connector schematics in the manual I could find no inconsistencies.

It appears that the turn signal wire at the pass parking light is getting backfed 12 volts from somewhere when the signals are not on.

It's also odd that the contacts have to be reversed from side to side - with the red wire as the parking light lead I would think they should be oriented the same on both sides. I think the green lead may be lighting the parking light filiment on the pass side - but I will have to check again to be 100% sure.

Dan

[DanEC]

My hunch that the Pass side parking light was getting power from the green wire appears to be wrong.

With ignition on, parking lights on, and signals off - I have 12 volts on both green and red contacts in the parking light socket on the Pass side. I can only pick up power on the green wire at connections 54/27 when the signal is switched on.

It kind of seems like the green wire at the Pass side turn signal is not the same green wire at the 54/27 and coming out of the steering column and at the split between rear and front circuits at connector 68. I guess tomorrow I will take my meter and see if I can get continuity on the green wire between 54 and the turn signal contact in the light housing.