Chrysler Repair: blowing fuse on 96 Sebring hazard/turn signal system, digital ohmmeter, lighting module


Question
QUESTION: hello roland im the one working on the 96 sebring my name is kenny . all the other lights in the car work fine i have replaced the multifunction switch and the customer replaced the flasher the fuse that blows is in the power distribution box #6 20a i took your sugestion and removed all the lamps and it still blows the fuse what also is confusing with all the lamps out the directionals still flash properly on the dash not fast like most do so im stuck thanks for trying to help

ANSWER: Hi Kenny,
I would still be interested in knowing if the turn signals function normally or not, e.g. turn off the hazard, put the bulbs in, replace the fuse, and just try the turn signals. The circuits really appears to be identical for the hazards and the turns, just that both sides operate when you set it for hazards.*
I suspect that one side or the other will also blow fuse #6.
The fact that the turns signal indicator lights on the dash are blinking at the normal rate even with the bulbs out has to mean that there is some sort of a short either in the harnesses that go to the right and left front or the harnesses that go to the combined rear lighting module. The flash rate would only be normal if there was some sort of a load even without the bulbs, but it evidentally is not a dead short to ground which would blow the fuse. That is why I suggested pulling the plugs at the junction box in my past response. Specifically I would suggest that you measure the resistance to ground on pins 4 and 5 at both of those plugs when the light bulbs are removed AND remove the natural color 12-pin plug at the junction block so as not to be measuring the turn signal indicator bulb on the cluster which are in parallel. The reading on both sets of pins (the 4's and the 5's) should be infinite with the bulbs pulled. Then I would verify that each of the bulbs are not shorted to ground either (use a digital ohmmeter to distinguish the filament from a dead short). If you find that the pins do read infinite, and none of the bulbs are shorted, then the last possibility is that there is a partial short to ground at pin 3 or pin 7 of the natural plug (measured after you go to the dash and remove the turn signal indicator bulbs which may be more work than you want to do).
*One last hunch: try increasing the fuse 6 size to 25 or 30 amps. It just may be that the draw of the 6 filaments plus the flasher unit plus the 2 little dash bulbs is exceeding 20 amp for no clear reason. It may just be too close to 20 amp and is therefor blowing. It is "strectch" but what else can it be?
Roland
PS Please let me know what you learn. And thank Bart for the ratings.

---------- FOLLOW-UP ----------

QUESTION: hey roland thanks for all your input i'm not sure if you got my mail last night i may have sent it on regular mail which i think  may be blocked but i'm going to keep trying to repair this problem and when i do ill let you know what it was.

Answer
Hi Kenny,
I did receive it, thanks, and responded. To me it has to be in the hazard/turn signal switch itself, the combo flasher, or the built-in connection between the two. The rest of the wiring is utilized by the turn signals which indeed are working and all the hazard switch does is connect both the left and right sides to the combo flasher. The fact that the indicators and combo flasher blink at the normal rate with the bulbs removed suggests to me that there is some sort of a partial short to ground in the flasher itself, otherwise it would blink more rapidly. So maybe try a new  combo flasher unit.
Roland