I can't comment on that due to site rules and my job.

 

You work for Homeland Security or TSA?

 

Active Army. Back on topic, though, bud

 

Okay.....

 

89 xj 4.0 AW 4 been running great for 6 months after replacing all that i figured i should have to on a new / used motor................ oil pump, rear main seal, timing chain and sprockets all new Felpro gaskets etc ... Anyway like i said it has been running like a top for 6 months and suddenly quit while i was driving it . I tested the CPS and wasn't getting the volt reading that i thought i should be getting so i replaced it and still no start ! has spark although seems weak and has fuel at the fuel rail at around 40 PSI . Anyway long story kinda short i thought i would check the timing today and all be damned it is out almost exactly 180 out !!! Do you guys have any ideas on how that might happen ? Thanks in advance for the help !!

 

Had an idea today... Can the rear window defrost circuit be used to power aftermarket heated seats? I know it runs on a timer like many OEM heated seats are. Thoughts?

 

Amp rating of the rear defogger circuit is 25 amps. Pretty high.

I wonder if the heated seats use a circuit breaker.

I'd be willing to try a 30 amp circuit breaker in heated seats in place of the 25 amp fuse. Especially if it were on your Jeep and not mine!! LOL.

 

Since you two drive old junk I figured I'd look at my '95 FSM. Nada. So I hit my '97 ZJ and '99 FSMs and found some goodies. I'm too lazy to post pictures right now so here's the word version.

There IS a breaker, each seat gets 20A. Like everything else on these things the wiring is laughably small. The seats have built-in thermistors and are driven by control modules that ride the temp appropriately. At least on 1997+ Chrysler stuff.

 

My junks ain't rusty!!!

 

 

What does all that mean to this layman? Electrical ain't my forté.

 

How many heated seats are you gonna use and if two, will they both be on at the same time?

 

At least the driver seat, and likely also the passenger seat. There would be potential for both of them to be on. Blown fuses?

 

25 amp circuit. 2 seats requiring 20 amps each. 40 amps. You would PROBABLY be okay with a 30 amp circuit breaker in place of the 25 amp fuse for the defogger.

I'm going to bed now. I get up at 4 am.

 

Big fat wire, separate breakers or fuses. The important bit is that the seats are driven by an active controller, not by a timer.

If you want to use your defog switch get a relay in there to drive the seats directly from the battery, and don't come QQing if your *** gets burnt lol