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I just got a rear harness for my 52 and it had the number tabs on it i also got the front harness but no tabs it was colar coded does anyone have a crossover from colar to numbers or a diagram to sort this mess out?thanks Tony

Who did you get your harness from?? They should be able to decode it for you...

The stock M37 harnesses had the circuits numbered according to the commom M series circuit list. Color coding appears in aftermarket wire sets or ones such as what Sid recently offered that were made for foreign goverment replacement contract use (and Sid was offering a decoder chart and technical assistance...).

If you can't get help from the source of your harness, you can find the wiring diagrams for the truck in the TM's (or online) and match it up to what you physically have although you'll have to pay attention to possible variences...

Good luck.

I am working with Sid on mine and he is providing a cross reference number to color. When I get mine, I'll make a scan and post if you need it.

When you get that cross reference chart if you would post it it would be a big [real big] help!!! Thanks for doing that.