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BRINGING IT ALL TOGETHER.... A's, G's & E's


+4
Rick's 66 Chevy Van
chrlsful
Udo
68vanman
8 posters

Painless Wiring harness install 1969 A-108

68vanman
68vanman


Number of posts : 124
Location : Hayward, CA
Registration date : 2012-09-29

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Post by 68vanman Mon Jul 29, 2019 1:32 pm

Hi,

I'm starting a new thread, bringing it over from my other thread titled "1969 A108 clean up and mods" This will be dedicated to the installation of a new Painless wiring harness for our vans. As always, I welcome any questions, support and keeping the thread on topic. This will be my first time installing a new harness. I would rate my electrical aptitude about 6-7 on a scale of 1-10. For my time and budget it was worth it to purchase a complete harness as opposed to replacing a few wires and connections. There were just too many splices, bad connections, etc. to deal with. On top of that, ordering all the correct colored/gauge wires and connections brings me close to the same price. I want a reliable van, and part of that means the wiring needs to be on point. I don't want to chase down electrical issues at night on the side of the road due to a 50 year old harness.

Where I began:  I've went thru the original wiring harness, which is really dried, cracked and has many splices with different colored wires. The wiring that goes up and along the front A pillar to the dome and tail lamps still looks to be in great shape so I will leave it in place for now. I followed the factory wiring diagram to help me label every wire and connection on the original harness. I used colored pencils to highlight the diagram and to follow the pathways to each connection. Secondly I printed out the Painless manual for this Mopar specific harness and compared it to the factory wiring BEFORE PURCHASING.

I wanted a harness that followed/copied the Mopar color codes as much as possible. Painless lists this harness for 1966-1976 Mopars. but remember this is for meant mostly for cars. When comparing my harness to the Painless harness I noticed the following:

For example, wire colors like purple and gray are not shown or used on the original harness. Some later model Mopar wiring harnesses do, so I would assume that's what Painless has done. The key thing to remember is that their wiring has every wire labeled so you know where it's supposed to connect.

Stock or aftermarket gauges?: I decided bypass the ammeter connection. I'm going to use a gauge pod for Oil, Temp, Volts, and fuel, so I won't be connecting to the back of the dash other than the speedometer. I'm also using and oil pressure sending unit unlike the original hard line/tubing from the block to the dash.

So after studying my original harness, labeling every connection, reading and re-reading the Painless Manual (you can download it from their website) I ordered from Summit the Painless Mopar customizable wiring harness #10127 and ProBraid chassis harness kit PRF-70920 and battery cable kit 40107.

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Udo
Udo


Number of posts : 247
Location : Victoria, BC Canada
Registration date : 2014-07-07

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Post by Udo Mon Jul 29, 2019 9:19 pm

Nice...doing mine was a nightmare but it went OK, just took time however mine was a 20 fused panel.
Now I am dealing seized 240 and trying to figure out what to do.
chrlsful
chrlsful


Number of posts : 107
Location : Amherst, MA
Registration date : 2014-04-22

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Post by chrlsful Mon Jul 29, 2019 9:31 pm

Udo wrote:Nice...doing mine was a nightmare but it went OK, just took time however mine was a 20 fused panel.
Now I am dealing seized 240 and trying to figure out what to do.

Put the 300 efi of the later yrs in it !!!
Y U in the A crowd?
Udo
Udo


Number of posts : 247
Location : Victoria, BC Canada
Registration date : 2014-07-07

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Post by Udo Mon Jul 29, 2019 9:34 pm

O'RLY?
What year do you suggest?
Is it a direct bolt in to the existing tranny or you talking the 300 and it's tranny?
Sorry OP!
68vanman
68vanman


Number of posts : 124
Location : Hayward, CA
Registration date : 2012-09-29

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Post by 68vanman Tue Jul 30, 2019 1:01 pm

Alright Udo, I'll let it slide this time Rolling Eyes Yes, I'm in the A van crowd. So back to the topic at hand:


Here are the other new parts I'm using with my electrical system:

Powermaster roundback retro 95 amp alternator PWM-7019
Powermaster mini starter PWM-9300
Stewart Warner electrical gauges
Painless battery cable kit (1 gauge) 40107

Here are the new cables compared to the stock battery cables. These will be routed thru the stock opening under the battery box, with new grommets.


In the chassis harness kit there is a separate bag with special instructions, red 10 gauge wire & terminals if you plan on using an alternator greater than 65 amps (which I am).

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Udo
Udo


Number of posts : 247
Location : Victoria, BC Canada
Registration date : 2014-07-07

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Post by Udo Tue Jul 30, 2019 1:44 pm

This is much needed thread either way, wiring is a PITA!
68vanman
68vanman


Number of posts : 124
Location : Hayward, CA
Registration date : 2012-09-29

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Post by 68vanman Thu Aug 01, 2019 10:02 am

For those wondering about the length of the harness, I maxed out my tape measure to 25 ft. and put the farthest end of the harness at 25 ft. These wires would be for the fuel sending unit, tail/backup lamps, license plate lamps. The front of the harness with the fuse block and wiring for the dash is at the start of the tape measure. You can see there is still plenty of length. I'll follow up with more pictures once I get started with the install.

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Painless Wiring harness install 1969 A-108  Harnes16
Rick's 66 Chevy Van
Rick's 66 Chevy Van


Number of posts : 324
Location : Denver nc
Age : 62
Registration date : 2011-03-06

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Post by Rick's 66 Chevy Van Thu Aug 01, 2019 11:20 am

this is awesome it will help so much wish some one would do 66 chevy van so i could do mine like this ,step by stepp is priceless thanks
Keith D
Keith D


Number of posts : 381
Location : El Dorado Hills, Ca
Registration date : 2016-11-25

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Post by Keith D Sat Aug 03, 2019 11:41 am

Looks like more than enough length, that's great, and that is a 108 correct?

68vanman
68vanman


Number of posts : 124
Location : Hayward, CA
Registration date : 2012-09-29

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Post by 68vanman Sat Aug 03, 2019 1:35 pm

Yes, that's a 108. The length within the cab is about 11-12f ft.
68vanman
68vanman


Number of posts : 124
Location : Hayward, CA
Registration date : 2012-09-29

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Post by 68vanman Sun Aug 18, 2019 10:23 pm

I started the install today and spent about 2 hours on it. Here are some FYI pointers before starting:

1. DO NOT pull any of the harness wires along anything metal within the van. If you're not paying attention it can get caught on the edges of any metal and start stripping insulation. I nicked a part of the dome light wire and thankfully didn't ruin it. Protect edges with cardboard or rags.

2. I wrapped the wiring with the Painless ProBraid wire loom before fishing it up the A-pillar along the driver side windshield. (see pics).

3. I used a fish tape to help pull the wire loom for the rear tail lights. I still have about 8 ft. of wire to run down towards the rear lights and fuel sender.

4. I separated the wires that will run to the engine and starter solenoid that mounts to the back of the doghouse. I ran it thru the floor but need to hold off until I put the radiator support back in.

5. When feeding the fish tape down the A pillar from the top down, the hole at the top edge runs parallel front to back, NOT top down. When pulling up the wire loom, keep your left hand on the wire loom pulling SLOWLY front to back, NOT pulling up! You'll feel tension and no movement if you try and pull up. Use your right hand to help feed it up. The hole you are feeding this thru is behind the dash, closest to the emergency flasher switch. (See pics).

After running the wires thru the ProBraid loom I wound up getting a severe cramp in my finger and hand so I stopped for the day. The next time I get out there I'll be making connections to the gauges and switches on the dash and headlights.


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kiwimopar
kiwimopar


Number of posts : 676
Location : New Zealand
Registration date : 2010-01-23

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Post by kiwimopar Tue Aug 20, 2019 10:27 pm

Nice progress. Here's another tip for you when running wires behind the dash....

Make sure you cable tie the loom behind the cluster - otherwise cables will come in contact with the wiper arm, and eventually wear through, causing shorts and blown fuses. I had this happen early on, and I lost the headlights because of that.

OutofSight
OutofSight


Number of posts : 1510
Location : Lake Oroville, Ca.
Registration date : 2015-11-19

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Post by OutofSight Tue Oct 15, 2019 7:25 pm

How are things progressing? I am now on the fence about doing the same with mine.
68vanman
68vanman


Number of posts : 124
Location : Hayward, CA
Registration date : 2012-09-29

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Post by 68vanman Mon Oct 28, 2019 11:26 am

OutofSight, no progress since my last post sorry. I've been meaning to get out there and finish up but I've been caught in time with the family and clearing out my NOS parts inventory (Mopar).
OutofSight
OutofSight


Number of posts : 1510
Location : Lake Oroville, Ca.
Registration date : 2015-11-19

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Post by OutofSight Mon Oct 28, 2019 5:58 pm

No worries, thanks for checking in. I’m cleaning up what I have going on presently and if I’m not happy with the results, I will go the painless route.
Keith D
Keith D


Number of posts : 381
Location : El Dorado Hills, Ca
Registration date : 2016-11-25

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Post by Keith D Mon Dec 02, 2019 11:39 am

I just order the wiring harness from Summit racing, it is on sale today for cyber Monday and if u use the promo code CYBER you save a little more.
OutofSight
OutofSight


Number of posts : 1510
Location : Lake Oroville, Ca.
Registration date : 2015-11-19

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Post by OutofSight Mon Dec 02, 2019 1:50 pm

495.78. I suppose every little bit helps.
Keith D
Keith D


Number of posts : 381
Location : El Dorado Hills, Ca
Registration date : 2016-11-25

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Post by Keith D Mon Dec 02, 2019 3:01 pm

OutofSight wrote:495.78.  I suppose every little bit helps.

Did you get it?
OutofSight
OutofSight


Number of posts : 1510
Location : Lake Oroville, Ca.
Registration date : 2015-11-19

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Post by OutofSight Mon Dec 02, 2019 5:03 pm

Yes, it’s on it’s way.
Keith D
Keith D


Number of posts : 381
Location : El Dorado Hills, Ca
Registration date : 2016-11-25

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Post by Keith D Mon Dec 02, 2019 6:18 pm

OutofSight wrote:Yes, it’s on it’s way.

Cool, I won't be installing mine until spring. First I have to spray the inside with Lizard Skin sound deadening and thermal barrier which I can't do until the weather warms. Then i can do the rewire, but I have plenty to do before then.

This sounds weird but wiring is one of the things that I enjoy the most, unlike most people I actually find it kind of relaxing. I come from an electronic background so that helps a lot.
OutofSight
OutofSight


Number of posts : 1510
Location : Lake Oroville, Ca.
Registration date : 2015-11-19

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Post by OutofSight Mon Dec 02, 2019 6:47 pm

Wiring is not my thing lol, I will asking for help with this task Wink Wink
dashshifter
dashshifter


Number of posts : 12
Location : Newport Beach, CA
Registration date : 2020-07-12

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Post by dashshifter Fri Aug 07, 2020 9:07 am

Any final tips on the install? Just got my mopar colored wiring kit.

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