Good bye coil rail.

[SilverXJ]

Someone has to.

[Moncheche]

I just installed a coil from a 2000 viper and the wires from a 3.3L caravan. Runs like a top. My old rail kept crapping out when it got warm. One of the best and easiest mods ever.

[3losh07]

jeepers which one is the right number for viper coil

UF412 or UF305

or both should work fine ? without damaging pcm ?

and what was your ideas of extending the length of connector ?

and if anyone has wires number that would be appreciated .

thanks

[darkcorp]

jeepers which one is the right number for viper coil

UF412 or UF305

or both should work fine ? without damaging pcm ?

I use Coil Airtex 5C1432. Runs good.

and what was your ideas of extending the length of connector ?

Just cut wires and extend them using solder.

and if anyone has wires number that would be appreciated .

thanks

Depends on year 1999 or past.

[SilverXJ]

and if anyone has wires number that would be appreciated .

Numbers for what?

[3losh07]

jeepers which one is the right number for viper coil

UF412 or UF305

or both should work fine ? without damaging pcm ?

I use Coil Airtex 5C1432. Runs good.

and what was your ideas of extending the length of connector ?

Just cut wires and extend them using solder.

and if anyone has wires number that would be appreciated .

thanks

Acutely i want to use a genuine coil instead of aftermarket
And my jeep is tj model 2000


Btw how does it work ? Worth to try ?

[3losh07]

and if anyone has wires number that would be appreciated .

Numbers for what?

Part# of igintion wire , i feel like i would screw it up if i bought cut to lenght wires

[darkcorp]

I run wires Tesla T139B from CHRYSLER GRAND VOYAGER III (GS).

[Retlaw01XJ]

You can mount the coil on the firewall, no wiring extensions required!
I made a z-shaped bracket to mount the coil about 1" from the firewall to clear stuff. It uses existing firewall studs.

[jeepxj3]

You can mount the coil on the firewall, no wiring extensions required!
I made a z-shaped bracket to mount the coil about 1" from the firewall to clear stuff. It uses existing firewall studs.

You can use stock XJ plug wires with this?

[Retlaw01XJ]

You can use stock XJ plug wires with this?

I mean the plug for the coil rail (from wiring harness) will reach the replacement coil (on firewall) without having to lengthen the wiring harness wires.
I bought a universal spark plug wire set and cut each wire to length. My 2001 never had spark plug wires, no idea if an older XJ set will work.

[motomick76]

SilverXJ,

I have been spending extensive amount of time researching this, and want to thank you for your ingenuity on this. One last question before I pull the trigger on this, you have a 2000 XJ and I have a 2000 TJ. The connector from the wire harness to coil for your setup is straight-through, just extended. Then there is the 180 'flip' for some people. Who needs the flip, and who needs the straight-through? Are the XJ and TJ wired same?

Thanks again.

[3losh07]

I need help

I have bought and installed viper igntion coil part# uf412 -B2918M
And jegs performance wires 40219 and i did the same as you guys installing 1&6 at the bottom, 2&5 middle and both flipped and non flipped 4&3 at top
The engine started but not smoothly
The problem here there is a lot if vibration that shake the car body with it and i have no clue what is the reason

Could be the wrong coil ? Or wrong wire ? Or bad pcm ?
It Can not be the spark plugs because i reused the coil rail and the engine started without problem

My jeep is 2000 tj 4.0l

[darkcorp]

I would check by disconnecting spark plugs one by one and finding therefore those that are wrong connected.

[SilverXJ]

SilverXJ,

I have been spending extensive amount of time researching this, and want to thank you for your ingenuity on this. One last question before I pull the trigger on this, you have a 2000 XJ and I have a 2000 TJ. The connector from the wire harness to coil for your setup is straight-through, just extended. Then there is the 180 'flip' for some people. Who needs the flip, and who needs the straight-through? Are the XJ and TJ wired same?

Thanks again.

As far as I know the 99 WJ is the only one that needs the wires switched.