Pink dash wires heating up/melting

Fmitchf · Aug 22, 2020

Hey guys I put all new harnesses from m and h in my 69 Coronet. New turn signal switch and turn signals work. All the lights work but no brake lights or hazard lights. The dome/stop fuse is burning hot to the touch which is heating up all the pink wires under the dash. I have grounded the taillights but I don’t see another obvious issue. I keep disconnecting the battery so all the pink wires don’t melt down. Any ideas would be appreciated. Thanks

65wgn440 · Aug 22, 2020

Visual check for harness/wires pinched or rubbed through and shorted to ground somewhere. Screws that attach sill panels are possible culprits also. Anywhere harness/wires take tight turns around metal panels can be potential cause.

hunt2elk · Aug 22, 2020

Are you certain all the pink wires in your fuse block are after the fuse? 1 or 2 didn't accidentally get put on the unfused side?

Fmitchf · Aug 22, 2020

hunt2elk said:
Are you certain all the pink wires in your fuse block are after the fuse? 1 or 2 didn't accidentally get put on the unfused side?

Yes all on fused side the red wire with white stripe is the only thing on the supply side—this is how it came brand new from m and h— no alterations except I plugged the map light connector in which is functioning normally with door switches

Fmitchf · Aug 22, 2020

65wgn440 said:
Visual check for harness/wires pinched or rubbed through and shorted to ground somewhere. Screws that attach sill panels are possible culprits also. Anywhere harness/wires take tight turns around metal panels can be potential cause.

Yes I am checking that but this is a brand new dash harness and the interior is not in yet so I can see that there are no screws or anything rubbing

tnfastback · Aug 22, 2020

Maybe the turn signal switch is faulty?? When I first got my car I had hot wire issues even melting in the steering column that eventually ended up being the turn signal switch.

Fmitchf · Aug 22, 2020

Fmitchf said:
Yes I am checking that but this is a brand new dash harness and the interior is not in yet so I can see that there are no screws or anything rubbing

Well as they say check the easy things first— I did not have 1004 dual contact bulbs in the convertible courtesy lights so is was backfeeding power... thank you guys

Fmitchf · Aug 22, 2020

tnfastback said:
Maybe the turn signal switch is faulty?? When I first got my car I had hot wire issues even melting in the steering column that eventually ended up being the turn signal switch.

It was the wrong bulbs in the courtesy lights they have to be 1004 thanks

tnfastback · Aug 22, 2020

Fmitchf said:
It was the wrong bulbs in the courtesy lights they have to be 1004 thanks

Good information for future reference :thumbsup:

Pink dash wires heating up/melting

Fmitchf

Member

65wgn440

Well-Known Member

hunt2elk

FBBO Gold Member

Fmitchf

Member

Fmitchf

Member

tnfastback

Well-Known Member

Fmitchf

Member

Fmitchf

Member

tnfastback

Well-Known Member

Similar threads