Find M_Y_COP and paste in these values:

M_Y_COP,		17
#slot		geometry	BULK	JOB	SUNNY	WET	MAT1	RES1A	RES1B	RES2A	RES2B		AUDIO ID
feet,		0,		0,	1,	0,	0,	0,	-1,	-1,	-1,	-1,		1
head,		2,		0,	1,	0,	0,	0,	-1,	-1,	-1,	-1,		10
head,		0,		0,	1,	0,	0,	0,	-1,	-1,	-1,	-1,		6
head,		1,		0,	1,	0,	0,	0,	-1,	-1,	-1,	-1,		6
uppr,		2,		0,	1,	1,	0,	0,	2,	1,	100,	1,		6
uppr,		1,		0,	1,	1,	0,	0,	2,	1,	100,	1,		3
uppr,		0,		0,	1,	1,	0,	0,	2,	1,	100,	1,		1
uppr,		3,		0,	1,	0,	1,	0,	2,	0,	100,	0,		0
uppr,		4,		0,	1,	1,	0,	0,	2,	1,	100,	1,		1
lowr,		0,		0,	1,	1,	0,	0,	-1,	-1,	-1,	-1,		1
lowr,		1,		0,	1,	0,	1,	0,	-1,	-1,	-1,	-1,		0
lowr,		2,	       -1,     -1,     -1,     -1,	0,	-1,	-1,	-1,	-1,		1
p_head,		0,		1,	1,	1,	0,	0,	-1,	-1,	-1,	-1,		0
p_head,		1,		1,	1,	0,	1,	0,	-1,	-1,	-1,	-1,		0
p_eyes,         0,              1,      1,      1,      0,      0,      -1,     -1,     -1,     -1,             0
p_eyes,         1,              1,      1,      1,      0,      0,      -1,     -1,     -1,     -1,             0
p_eyes,         2,              1,      1,      1,      0,      0,      -1,     -1,     -1,     -1,             0
end

Note: This pedVariations.dat entry will ensure that ambient police spawn with all three pairs of sunglasses as well as the new body armor. However, this entry is designed for ambient police in normal gameplay, therefore, I have not put every clothing item on here. 

I disabled ambient spawns of the tactical pants by default, as they only look good with the body armor model or the jacket and tie- when paired with the short-sleeve shirt and the long-sleeve shirt and tie neither mesh fits together too well. They can be equipped using a trainer or by spawning in officers, but otherwise they will not appear on officers that spawn in normally- However, if you want the tactical pants to spawn on normal officers, simply delete the second lowr line.

The tactical helmet, respirator, ball cap, ushanka and bike helmet are also disabled since all this equipment is situation-based (poor weather, HazMat, bike patrols, formality, etc) and thusly it wouldn't make much sense for patrolling cops to wear that gear outside of the aforesaid circumstances- However, it can of course be equipped with a trainer, and perhaps can be made to spawn in certain clothing configurations with scripts in the near future. 

If you want the ball cap to spawn on ambient police, add this line in below the second p_head line and increase the variations value to 18:

p_head,		2,		1,	1,	0,	1,	0,	-1,	-1,	-1,	-1,		0
