help please wiring questions 73 Duster

[rp23g7]

So, i bought a engine harness from Evens, for the 73 Duster.

The questions i have is hooking the ballast resistor wires up.

My Duster has a 4 prong BR.

The Evens has a 2 prong setup. I called them, no answer.

The Dusters old harness has ....

Upper right green/w red stripe to ignition box

lower right brown wire, going to some connector that is not attached to anything

upper left 2 blues, 1 i think goes to the alt, and the other goes down to the lower left.

lower left has the blue from the upper left, and a green and yellow to the ignition box

the new harness has a single blue with white stripe, and a double wire single connector, Brown wire and blue wire.

Anyone have a idea how to hook this up

[67Dart273]

If your ignition ECU is a so called "4 pin" the new harness will work

You cannot necessarily tell a 4 pin from a 5, as some 4 pin ECUs have 5 pins

You'll have to use an ohmeter and see if the 5th is connected to anything

The difference is one wire and half the resistor. Here are the two diagrams, 4 and 5 pin ECU

You can wire it up for a 4 pin ballast, and it will work with EITHER 4 or 5 pin ECU, but the 5 pin ECU MUST have a 4 pin resistor

from here:

http://www.mymopar.com/index.php?pid=31

The older 5 pin ECU/ 4 pin resistor. Essentially, Mopar eliminated the left half of the dual resistor, and the wire coming off the bottom left of the resistor

If you decide you need the 4 pin resistor PAY ATTENTION to the notch depicted in the drawing at the bottom of the resistor. This properly orients the resistor, as the left and right sides are different resistance.



The newer 4 pin box/ 2 pin resistor for comparison

[img[http://www.mymopar.com/downloads/Ignition_System_4pin.jpg[/img]

[rp23g7]

I friggen gave up, and put the old one back on, cant figure out whats up. Now my headlights dont work.

Strange issue, my tail lights and markers work. My headlights, grill lights and front markers dont.

I have power at each side of all fuses, i have power at the high beam switch, i have power at the headlight relay.

I took a headlight out, and tested the connector, weird issue, with the head light switch off, i have power at all three connectors on the plug, with the switch on, there is no power at any connector on the plug. GRRRR

[rp23g7]

ok so feel free to call me a dork, i was installing the wrong harness, i ordered 3, one for each car, i was trying to put the 70 Duster harness on the 73, oopps. It started right up.

Headlights still dont work though.

[67Dart273]

A good starting place is to check the dimmer switch. With the headlights on, two terminals should be hot to ground, and switching the dimmer should change to the cold terminal.

If you have power there (and the panel "high beam" indicator works) then it's probably either in the bulkhead connector or out at the headlights, CHECK THE GROUND pigtail

[rp23g7]

Originally Posted by 67Dart273

A good starting place is to check the dimmer switch. With the headlights on, two terminals should be hot to ground, and switching the dimmer should change to the cold terminal.

If you have power there (and the panel "high beam" indicator works) then it's probably either in the bulkhead connector or out at the headlights, CHECK THE GROUND pigtail

just checked that, with the headlights on, i have power at all three terminals, both low and high.

With lights off i have no power on any of the three.

Bad dimmer switch?

[moparisbest]

Check the ground up front by the rad make sure there is a ground from battery to rad suport

[rp23g7]

Tried switching the 70 and 73 dimmer switch, that didnt work, looked at the ground, it was trashed, yrs of being by the battery had done it in, and i probably broke it doing the harness. Stripped and grounded it to the battery and the head lights worked.

Fixing tomorrow, thanks eveyone.

[67Dart273]

See? You can do it!!