Page 5 of 7
					
				Re: Good bye coil rail.
				Posted: April 16th, 2015, 1:16 pm
				by SilverXJ
				Someone has to.
			 
			
					
				Re: Good bye coil rail.
				Posted: May 5th, 2015, 9:48 am
				by 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.
			 
			
					
				Re: Good bye coil rail.
				Posted: August 20th, 2015, 6:04 am
				by 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
			 
			
					
				Re: Good bye coil rail.
				Posted: August 20th, 2015, 7:00 am
				by darkcorp
				3losh07 wrote: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.
3losh07 wrote:
and what was your ideas of  extending the length of connector ?
Just cut wires and extend them using solder.
3losh07 wrote:and if anyone has wires number that would be appreciated .
thanks
Depends on year 1999 or past.
 
			
					
				Re: Good bye coil rail.
				Posted: August 20th, 2015, 8:06 am
				by SilverXJ
				3losh07 wrote:and if anyone has wires number that would be appreciated .
Numbers for what?
 
			
					
				Re: Good bye coil rail.
				Posted: August 20th, 2015, 9:48 am
				by 3losh07
				darkcorp wrote:3losh07 wrote: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.
3losh07 wrote:
and what was your ideas of  extending the length of connector ?
Just cut wires and extend them using solder.
3losh07 wrote: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 ?
 
			
					
				Re: Good bye coil rail.
				Posted: August 20th, 2015, 9:51 am
				by 3losh07
				SilverXJ wrote:3losh07 wrote: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
 
			
					
				Re: Good bye coil rail.
				Posted: August 20th, 2015, 9:51 pm
				by darkcorp
				I run wires Tesla T139B from CHRYSLER GRAND VOYAGER III (GS).
			 
			
					
				Re: Good bye coil rail.
				Posted: August 21st, 2015, 9:38 am
				by 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.
			 
			
					
				Re: Good bye coil rail.
				Posted: August 21st, 2015, 3:07 pm
				by jeepxj3
				Retlaw01XJ wrote: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?
 
			
					
				Re: Good bye coil rail.
				Posted: August 21st, 2015, 11:14 pm
				by Retlaw01XJ
				jeepxj3 wrote:
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.
 
			
					
				Re: Good bye coil rail.
				Posted: September 8th, 2015, 10:57 am
				by 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.
			 
			
					
				Re: Good bye coil rail.
				Posted: July 28th, 2016, 11:56 pm
				by 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
			 
			
					
				Re: Good bye coil rail.
				Posted: July 29th, 2016, 4:52 am
				by darkcorp
				I would check by disconnecting spark plugs one by one and finding therefore those that are wrong connected.
			 
			
					
				Re: Good bye coil rail.
				Posted: August 25th, 2016, 8:55 pm
				by SilverXJ
				motomick76 wrote: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.