Join Date: Sep 1999
Location: Palmyra, WI
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Re: Getting ready for Howell Fi Install, first problem
12 volt 'switched' power (pink wire to the Howell computer) can come off of the red wire that goes to your factory oil pressure gauge. This is the only source of 12v power I have found that is hot during 'Crank" and 'Run' (Thanks LEVE)
You DON'T have to drop the heater duct or dash to access your factory computer. I think this instruction is for YJ's. The retaining screw that is towards the front of the Jeep is a beyotch to get to, I used a 1/4" drive ratchet and socket with a phillips head attachment. Install the Howell computer using wide, stick on Velcro to attach it to the stock bracket.
Where it says to "Cut the rest of the (factory) computer harness away from the main trunk", DON'T! Just unplug it from that flat plug near the brake booster. The only wires you need to cut and splice out of that harness are for the electronic ignition.
Also, there are instructions to "open up" the 4 pin connector at the electronic ign. box (harness side) to attach the purple wire... the plug does not come apart on CJ's. I just spliced it into the purple wire coming out of the ignition box. I may try to find a replacement type plug to make this connection correct in the wiring harness, but it works the way I did it.
A 10" air cleaner ~fits~, but it nearly touches the power brake booster. Find a 9" filter assy if you can.
I can't think of anything else at the moment that would help, but if you have any questions, post back here. I'm leaving to go shooting for a couple hours, but I'll check back here when I get home.