1jzgte harness through speedo hole?

Travis89Turbo · 08-31-2010, 12:32 PM

I have read in various forums that the harness does not have to be extended the 18" by cutting a hole in firewall next to speedo hole. Can any one confirm or deny this? And any special instructions to do so? To me it don't make sense cuz the glove box is still the same distance away. I'm in the process of the swap right now so any info greatly appreciated.

cre · 09-01-2010, 04:24 AM

Even if it wee possible the amount of shit you'll have to route it around to get where the ECU sits would probably require at least partially pulling the dash.... not terrible if it's a one time thing, but you better pray you don't have to pull it for any reason or need good clear access for diagnosing a short or open in a line.

1JZ Raider · 10-16-2011, 03:27 AM

I have a 1jz that ran into problems due to hacked up wiring, an HKS PF-com was terribly hacked into the computer wiring.
Now we are going to do exactly what you are unsure of doing, we're going to take the intake off to get an easier opening to drill a hole to run the wiring harness thru and mount the computer where it's supposed to go.... It's easier than extending every wire

08-31-2010, 12:32 PM	#1
Travis89Turbo 12psi boost Join Date: Jul 2010 Location: Utah Posts: 332	1jzgte harness through speedo hole? I have read in various forums that the harness does not have to be extended the 18" by cutting a hole in firewall next to speedo hole. Can any one confirm or deny this? And any special instructions to do so? To me it don't make sense cuz the glove box is still the same distance away. I'm in the process of the swap right now so any info greatly appreciated. __________________ 1995 Toyota Supra SE 71k miles. Master power T70 stock 2jzge 1989 Toyota Supra. 1jzgte swap 5 speed of course.. Driftmotion 60-1 single turbo kit. Cxracing FMIC. 2jz 550cc injectors... soon to come..... EMS Stinger. BC 264 cams 680cc injectors Spec stage 4 clutch and A LOT of boost!------SOLD 1999 Ford F350 diesel 2004 Jaguar XJR Supercharged If it hasnt broke you haven pushed it hard enough!!

09-01-2010, 04:24 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Even if it wee possible the amount of shit you'll have to route it around to get where the ECU sits would probably require at least partially pulling the dash.... not terrible if it's a one time thing, but you better pray you don't have to pull it for any reason or need good clear access for diagnosing a short or open in a line. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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10-16-2011, 03:27 AM	#3
1JZ Raider Stock Join Date: Oct 2011 Location: Hammond, IN. Posts: 2	I have a 1jz that ran into problems due to hacked up wiring, an HKS PF-com was terribly hacked into the computer wiring. Now we are going to do exactly what you are unsure of doing, we're going to take the intake off to get an easier opening to drill a hole to run the wiring harness thru and mount the computer where it's supposed to go.... It's easier than extending every wire