Seat swap

[Hondo25004x4]

Hi all recently my dad's 99 2500 got totaled so i decided to swap my cloth seats for his leather seats. I realized that the wiring harness for the seats was different due to the extra power features in his so I noted what all the wires did i.e. which were hot, which were switched power, and ground. I installed the new seats in my truck, but the problem I am having is witht he seat belts. All of the pwer features work great all the time, but every time I get in the truck the seat belts are locked up. If I unplug the harness under the seat and plug it back in they work great for about 45 minutes then lock up again, once again i unplug and replug and everything is fine. Any ideas?

[mobs241]

seat belts locking up should have nothing to do with wiring.. seatbelts are mechanical. a ratcheting mechanicism with a lever and a spring is all thats in a seatbelt.. may have to replace the seat belts. if he was in an accident they most likely are stretched and no good.

[cahammer]

in the 98-02 4 door model 2nd gens the seat belts have a certin power supply wire that needs to be hooked up it is a vilote wire w/no tracer color i think or try opening the passenger door going down the road that works too also when your belts lock up does the seatbelt idot light come on hope this helps

[Hondo25004x4]

I looked under the seat, no violet wire w/o tracer. The seat belt light comes on after i unplug them and then plug them back in. The light goes out when they lock up again. Opening the door doesn't help either. Is their anywhere to see a wiring diagram without going to the dealer?

[cahammer]

try this link and see if it is what you are looking for hope this helps cahammer

http://www.turbodieselregister.com/f...ower+seat+wire

[Hondo25004x4]

Thanks for the link, but I can't access the site, I am not a member.

[ndurbin]

I think I have figured this out. It seams 99 was the last year for the electronic seat belt restraint system. 2000 and newer used standard inertia reels on the seat belts. The only wiring for the 2000 and newer is just for the seatbelt light or buzzer. You could probably switch the belts for the newer ones, but they are about $350 for the pair or you could wire in the seatbelt control module. The seatbelt control module mounts to the bottom of the center console towards the front, it controls the locking and unlocking of the belts reels by external inputs from the ignition switch, and left and right door switches and internal inputs from the built-in g-force meter and timer.
The seatbelt reels have a soleniod that unlocks the belt when 12v are applied from the seat belt control module. There is a wiring harness that connects the seatbelt control module to both seats and the body harness. This is the wiring for the seat belt control module:

DB 18 (dark blue, 18 ga)-fused ignition power in Run and Acc
PK 18-fused battery power
LG/BK 18 (light green/black)-airbag contol module, this is the fault signal from the seatbelt control module that would light the airbag light in the dash if the seatbelt control module is faulty
OR/BK 18-to left seatbelt solenoid
OR/RD 18-to right seatbelt solenoid
TN (tan) 18 to left door ajar switch, grounds when door is closed
TN/RD 18 to right door ajar switch
BK/LG 18 Ground
LB/PK 18 Ground

There will also be a selt belt switch for the seat belt light in the dash, it is a LG/RD 18 wire that grounds when the seat belt is out.

I think that was the part of the post he was referring too.

[cahammer]

ndurbin

thanks for getting that quote up

[sarscuba]

Thanks ndurbin, I have been having issues with my 99 Dodge Ram 2500 seat belts. When it was cold out it would work fine. Once the temps get above 75 degrees the seat belts just don't work, all locked up. Well thanks again for shedding some serious light on the situation.